diff --git a/HELP.md b/HELP.md
new file mode 100644
index 0000000..2ae9570
--- /dev/null
+++ b/HELP.md
@@ -0,0 +1,9 @@
+# Getting Started
+
+### Reference Documentation
+For further reference, please consider the following sections:
+
+* [Official Apache Maven documentation](https://maven.apache.org/guides/index.html)
+* [Spring Boot Maven Plugin Reference Guide](https://docs.spring.io/spring-boot/docs/2.6.4/maven-plugin/reference/html/)
+* [Create an OCI image](https://docs.spring.io/spring-boot/docs/2.6.4/maven-plugin/reference/html/#build-image)
+
diff --git a/mvnw b/mvnw
new file mode 100644
index 0000000..8a8fb22
--- /dev/null
+++ b/mvnw
@@ -0,0 +1,316 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+# JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+# M2_HOME - location of maven2's installed home dir
+# MAVEN_OPTS - parameters passed to the Java VM when running Maven
+# e.g. to debug Maven itself, use
+# set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+# MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+ if [ -f /usr/local/etc/mavenrc ] ; then
+ . /usr/local/etc/mavenrc
+ fi
+
+ if [ -f /etc/mavenrc ] ; then
+ . /etc/mavenrc
+ fi
+
+ if [ -f "$HOME/.mavenrc" ] ; then
+ . "$HOME/.mavenrc"
+ fi
+
+fi
+
+# OS specific support. $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+ CYGWIN*) cygwin=true ;;
+ MINGW*) mingw=true;;
+ Darwin*) darwin=true
+ # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+ # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+ if [ -z "$JAVA_HOME" ]; then
+ if [ -x "/usr/libexec/java_home" ]; then
+ export JAVA_HOME="`/usr/libexec/java_home`"
+ else
+ export JAVA_HOME="/Library/Java/Home"
+ fi
+ fi
+ ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+ if [ -r /etc/gentoo-release ] ; then
+ JAVA_HOME=`java-config --jre-home`
+ fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+ ## resolve links - $0 may be a link to maven's home
+ PRG="$0"
+
+ # need this for relative symlinks
+ while [ -h "$PRG" ] ; do
+ ls=`ls -ld "$PRG"`
+ link=`expr "$ls" : '.*-> \(.*\)$'`
+ if expr "$link" : '/.*' > /dev/null; then
+ PRG="$link"
+ else
+ PRG="`dirname "$PRG"`/$link"
+ fi
+ done
+
+ saveddir=`pwd`
+
+ M2_HOME=`dirname "$PRG"`/..
+
+ # make it fully qualified
+ M2_HOME=`cd "$M2_HOME" && pwd`
+
+ cd "$saveddir"
+ # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+ [ -n "$M2_HOME" ] &&
+ M2_HOME=`cygpath --unix "$M2_HOME"`
+ [ -n "$JAVA_HOME" ] &&
+ JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+ [ -n "$CLASSPATH" ] &&
+ CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+ [ -n "$M2_HOME" ] &&
+ M2_HOME="`(cd "$M2_HOME"; pwd)`"
+ [ -n "$JAVA_HOME" ] &&
+ JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+ javaExecutable="`which javac`"
+ if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+ # readlink(1) is not available as standard on Solaris 10.
+ readLink=`which readlink`
+ if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+ if $darwin ; then
+ javaHome="`dirname \"$javaExecutable\"`"
+ javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+ else
+ javaExecutable="`readlink -f \"$javaExecutable\"`"
+ fi
+ javaHome="`dirname \"$javaExecutable\"`"
+ javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+ JAVA_HOME="$javaHome"
+ export JAVA_HOME
+ fi
+ fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+ if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD="$JAVA_HOME/jre/sh/java"
+ else
+ JAVACMD="$JAVA_HOME/bin/java"
+ fi
+ else
+ JAVACMD="`\\unset -f command; \\command -v java`"
+ fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+ echo "Error: JAVA_HOME is not defined correctly." >&2
+ echo " We cannot execute $JAVACMD" >&2
+ exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+ echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+ if [ -z "$1" ]
+ then
+ echo "Path not specified to find_maven_basedir"
+ return 1
+ fi
+
+ basedir="$1"
+ wdir="$1"
+ while [ "$wdir" != '/' ] ; do
+ if [ -d "$wdir"/.mvn ] ; then
+ basedir=$wdir
+ break
+ fi
+ # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+ if [ -d "${wdir}" ]; then
+ wdir=`cd "$wdir/.."; pwd`
+ fi
+ # end of workaround
+ done
+ echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+ if [ -f "$1" ]; then
+ echo "$(tr -s '\n' ' ' < "$1")"
+ fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+ exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Found .mvn/wrapper/maven-wrapper.jar"
+ fi
+else
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+ fi
+ if [ -n "$MVNW_REPOURL" ]; then
+ jarUrl="$MVNW_REPOURL/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+ else
+ jarUrl="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+ fi
+ while IFS="=" read key value; do
+ case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+ esac
+ done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Downloading from: $jarUrl"
+ fi
+ wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+ if $cygwin; then
+ wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+ fi
+
+ if command -v wget > /dev/null; then
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Found wget ... using wget"
+ fi
+ if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+ wget "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+ else
+ wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath" || rm -f "$wrapperJarPath"
+ fi
+ elif command -v curl > /dev/null; then
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Found curl ... using curl"
+ fi
+ if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+ curl -o "$wrapperJarPath" "$jarUrl" -f
+ else
+ curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
+ fi
+
+ else
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo "Falling back to using Java to download"
+ fi
+ javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+ # For Cygwin, switch paths to Windows format before running javac
+ if $cygwin; then
+ javaClass=`cygpath --path --windows "$javaClass"`
+ fi
+ if [ -e "$javaClass" ]; then
+ if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo " - Compiling MavenWrapperDownloader.java ..."
+ fi
+ # Compiling the Java class
+ ("$JAVA_HOME/bin/javac" "$javaClass")
+ fi
+ if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+ # Running the downloader
+ if [ "$MVNW_VERBOSE" = true ]; then
+ echo " - Running MavenWrapperDownloader.java ..."
+ fi
+ ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+ fi
+ fi
+ fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+ echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+ [ -n "$M2_HOME" ] &&
+ M2_HOME=`cygpath --path --windows "$M2_HOME"`
+ [ -n "$JAVA_HOME" ] &&
+ JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+ [ -n "$CLASSPATH" ] &&
+ CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+ [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+ MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+ $MAVEN_OPTS \
+ $MAVEN_DEBUG_OPTS \
+ -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+ "-Dmaven.home=${M2_HOME}" \
+ "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+ ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
diff --git a/mvnw.cmd b/mvnw.cmd
new file mode 100644
index 0000000..1d8ab01
--- /dev/null
+++ b/mvnw.cmd
@@ -0,0 +1,188 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements. See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership. The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License. You may obtain a copy of the License at
+@REM
+@REM https://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied. See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on" echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_pre.bat" call "%USERPROFILE%\mavenrc_pre.bat" %*
+if exist "%USERPROFILE%\mavenrc_pre.cmd" call "%USERPROFILE%\mavenrc_pre.cmd" %*
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+
+FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+ IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+ if "%MVNW_VERBOSE%" == "true" (
+ echo Found %WRAPPER_JAR%
+ )
+) else (
+ if not "%MVNW_REPOURL%" == "" (
+ SET DOWNLOAD_URL="%MVNW_REPOURL%/org/apache/maven/wrapper/maven-wrapper/3.1.0/maven-wrapper-3.1.0.jar"
+ )
+ if "%MVNW_VERBOSE%" == "true" (
+ echo Couldn't find %WRAPPER_JAR%, downloading it ...
+ echo Downloading from: %DOWNLOAD_URL%
+ )
+
+ powershell -Command "&{"^
+ "$webclient = new-object System.Net.WebClient;"^
+ "if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+ "$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+ "}"^
+ "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
+ "}"
+ if "%MVNW_VERBOSE%" == "true" (
+ echo Finished downloading %WRAPPER_JAR%
+ )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% ^
+ %JVM_CONFIG_MAVEN_PROPS% ^
+ %MAVEN_OPTS% ^
+ %MAVEN_DEBUG_OPTS% ^
+ -classpath %WRAPPER_JAR% ^
+ "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" ^
+ %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%"=="" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%USERPROFILE%\mavenrc_post.bat" call "%USERPROFILE%\mavenrc_post.bat"
+if exist "%USERPROFILE%\mavenrc_post.cmd" call "%USERPROFILE%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%"=="on" pause
+
+if "%MAVEN_TERMINATE_CMD%"=="on" exit %ERROR_CODE%
+
+cmd /C exit /B %ERROR_CODE%
diff --git a/pom.xml b/pom.xml
new file mode 100644
index 0000000..26399f9
--- /dev/null
+++ b/pom.xml
@@ -0,0 +1,60 @@
+
+
+ 4.0.0
+
+ org.springframework.boot
+ spring-boot-starter-parent
+ 2.6.4
+
+
+ com.gdn.onboarding.day1
+ gdnDay1
+ 0.0.1-SNAPSHOT
+ gdnDay1
+ Test project for Spring Boot
+
+ 1.8
+
+
+
+ org.springframework.boot
+ spring-boot-starter
+
+
+
+ org.projectlombok
+ lombok
+ true
+
+
+ org.springframework.boot
+ spring-boot-starter-test
+ test
+
+
+ org.jetbrains
+ annotations
+ RELEASE
+ compile
+
+
+
+
+
+
+ org.springframework.boot
+ spring-boot-maven-plugin
+
+
+
+ org.projectlombok
+ lombok
+
+
+
+
+
+
+
+
diff --git a/src/main/java/com/gdn/onboarding/day1/gdnDay1/BubbleSort/BubbleSort.java b/src/main/java/com/gdn/onboarding/day1/gdnDay1/BubbleSort/BubbleSort.java
new file mode 100644
index 0000000..68ea659
--- /dev/null
+++ b/src/main/java/com/gdn/onboarding/day1/gdnDay1/BubbleSort/BubbleSort.java
@@ -0,0 +1,20 @@
+package com.gdn.onboarding.day1.gdnDay1.BubbleSort;
+
+public class BubbleSort {
+ public int[] bubbleSort(int[] arr)
+ {
+ if(arr==null){
+ throw new IllegalArgumentException("array must not be null");
+ }
+ int n = arr.length;
+ for (int i = 0; i < n-1; i++)
+ for (int j = 0; j < n-i-1; j++)
+ if (arr[j] > arr[j+1])
+ {
+ int temp = arr[j];
+ arr[j] = arr[j+1];
+ arr[j+1] = temp;
+ }
+ return arr;
+ }
+}
diff --git a/src/main/java/com/gdn/onboarding/day1/gdnDay1/Calendar/Calendar.java b/src/main/java/com/gdn/onboarding/day1/gdnDay1/Calendar/Calendar.java
new file mode 100644
index 0000000..7f95cad
--- /dev/null
+++ b/src/main/java/com/gdn/onboarding/day1/gdnDay1/Calendar/Calendar.java
@@ -0,0 +1,70 @@
+package com.gdn.onboarding.day1.gdnDay1.Calendar;
+
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class Calendar {
+ public Logger log = LoggerFactory.getLogger(Calendar.class);
+ public String printCalendar(Integer n){
+ String month = null;
+ if(n == null){
+ throw new IllegalArgumentException("Parameter cannot be null");
+ }
+ switch(n)
+ {
+ case 1:
+ log.info("January");
+ month = "January";
+ break;
+ case 2:
+ log.info("February");
+ month = "February";
+ break;
+ case 3:
+ log.info("March");
+ month = "March";
+ break;
+ case 4:
+ log.info("April");
+ month = "April";
+ break;
+ case 5:
+ log.info("May");
+ month = "May";
+ break;
+ case 6:
+ log.info("June");
+ month = "June";
+ break;
+ case 7:
+ log.info("July");
+ month = "July";
+ break;
+ case 8:
+ log.info("August");
+ month = "August";
+ break;
+ case 9:
+ log.info("September");
+ month = "September";
+ break;
+ case 10:
+ log.info("October");
+ month = "October";
+ break;
+ case 11:
+ log.info("November");
+ month = "November";
+ break;
+ case 12:
+ log.info("December");
+ month = "December";
+ break;
+ default:
+ throw new IllegalArgumentException("Invalid number");
+
+ }
+ return month;
+ }
+}
diff --git a/src/main/java/com/gdn/onboarding/day1/gdnDay1/Factorial/Factorial.java b/src/main/java/com/gdn/onboarding/day1/gdnDay1/Factorial/Factorial.java
new file mode 100644
index 0000000..7afea83
--- /dev/null
+++ b/src/main/java/com/gdn/onboarding/day1/gdnDay1/Factorial/Factorial.java
@@ -0,0 +1,9 @@
+package com.gdn.onboarding.day1.gdnDay1.Factorial;
+
+public class Factorial {
+ public Integer factorial(Integer value){
+ if(value<0 || value == null) throw new IllegalArgumentException("Value must not be null or less than 0");
+ if(value==0||value==1) return 1;
+ else return value * factorial(value-1);
+ }
+}
diff --git a/src/main/java/com/gdn/onboarding/day1/gdnDay1/GdnDay1Application.java b/src/main/java/com/gdn/onboarding/day1/gdnDay1/GdnDay1Application.java
new file mode 100644
index 0000000..d5dbb71
--- /dev/null
+++ b/src/main/java/com/gdn/onboarding/day1/gdnDay1/GdnDay1Application.java
@@ -0,0 +1,13 @@
+package com.gdn.onboarding.day1.gdnDay1;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class GdnDay1Application {
+
+ public static void main(String[] args) {
+ SpringApplication.run(GdnDay1Application.class, args);
+ }
+
+}
diff --git a/src/main/java/com/gdn/onboarding/day1/gdnDay1/LetterGrade/LetterGrade.java b/src/main/java/com/gdn/onboarding/day1/gdnDay1/LetterGrade/LetterGrade.java
new file mode 100644
index 0000000..9c7fc73
--- /dev/null
+++ b/src/main/java/com/gdn/onboarding/day1/gdnDay1/LetterGrade/LetterGrade.java
@@ -0,0 +1,11 @@
+package com.gdn.onboarding.day1.gdnDay1.LetterGrade;
+
+public class LetterGrade {
+ public String checkGrade(Integer score){
+ if(score==null || score <0) throw new IllegalArgumentException("Score must not be null or less than 0");
+ String grade = (score >= 90) ? "A" : (score >= 85) ? "A-" : (score >= 80) ? "B+"
+ : (score >= 75) ? "B" : "C";
+ return grade;
+ }
+
+}
diff --git a/src/main/java/com/gdn/onboarding/day1/gdnDay1/ToDoList/ToDoList.java b/src/main/java/com/gdn/onboarding/day1/gdnDay1/ToDoList/ToDoList.java
new file mode 100644
index 0000000..f6f9b84
--- /dev/null
+++ b/src/main/java/com/gdn/onboarding/day1/gdnDay1/ToDoList/ToDoList.java
@@ -0,0 +1,57 @@
+package com.gdn.onboarding.day1.gdnDay1.ToDoList;
+
+import org.jetbrains.annotations.NotNull;
+import sun.management.resources.agent;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Scanner;
+
+public class ToDoList {
+
+ private Scanner scan = new Scanner(System.in);
+
+ List list = new ArrayList<>();
+
+ public void printMenu() {
+ System.out.println("To Do List - Suclinton");
+ System.out.println("==============================");
+ System.out.println("1. My To Do List");
+ System.out.println("2. Add");
+ System.out.println("3. Remove");
+ System.out.println("4. Exit");
+ System.out.print(">> ");
+ }
+
+
+ public boolean print() {
+ if (list.isEmpty()) {
+ throw new IllegalArgumentException("List is empty");
+ }
+ else {
+ System.out.println("My To Do List");
+ for (int i = 1; i <= list.size();i++){
+ System.out.println(i+". " +list.get(i-1));
+ }
+ }
+ return true;
+ }
+
+
+ public void add(@NotNull String input) {
+ if (input.isEmpty()) throw new IllegalArgumentException("To Do List must be filled");
+ list.add(input);
+ }
+
+
+ public void remove(Integer index) {
+ if (list.isEmpty()) {
+ throw new IllegalArgumentException("List is empty");
+ }
+ if(index > list.size()||index < 0){
+ throw new ArrayIndexOutOfBoundsException("index out of range");
+ }
+ else list.remove((int)index);
+ }
+
+}
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/src/main/resources/application.properties
@@ -0,0 +1 @@
+
diff --git a/src/test/java/com/gdn/onboarding/day1/gdnDay1/BubbleSort/BubbleSortTest.java b/src/test/java/com/gdn/onboarding/day1/gdnDay1/BubbleSort/BubbleSortTest.java
new file mode 100644
index 0000000..2623f5d
--- /dev/null
+++ b/src/test/java/com/gdn/onboarding/day1/gdnDay1/BubbleSort/BubbleSortTest.java
@@ -0,0 +1,38 @@
+package com.gdn.onboarding.day1.gdnDay1.BubbleSort;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class BubbleSortTest {
+ BubbleSort b = new BubbleSort();
+ @Test
+ void bubbleSortTest() {
+ int[] arr = {3,2,4,1,2,5};
+ int[] result = {1, 2, 2, 3, 4, 5};
+ Assertions.assertArrayEquals(result,b.bubbleSort(arr));
+ }
+
+ @Test
+ void bubbleSortTest2() {
+ int[] arr = {5,2,4,11,53,5};
+ int[] result = {2, 4, 5, 5, 11, 53};
+ Assertions.assertArrayEquals(result,b.bubbleSort(arr));
+ }
+
+ @Test
+ void bubbleSortTest3() {
+ int[] arr = {5,2,4,11,53,5};
+ int[] result = {5,2,4,11,53,5};
+ Assertions.assertNotEquals(result,b.bubbleSort(arr));
+ }
+
+ @Test
+ void bubbleSortTest4() {
+ Assertions.assertThrows(IllegalArgumentException.class, () -> {
+ int[] result = {5,2,4,11,53,5};
+ Assertions.assertEquals(result, b.bubbleSort(null));
+ });
+ }
+}
\ No newline at end of file
diff --git a/src/test/java/com/gdn/onboarding/day1/gdnDay1/Calendar/CalendarTest.java b/src/test/java/com/gdn/onboarding/day1/gdnDay1/Calendar/CalendarTest.java
new file mode 100644
index 0000000..aefdf98
--- /dev/null
+++ b/src/test/java/com/gdn/onboarding/day1/gdnDay1/Calendar/CalendarTest.java
@@ -0,0 +1,53 @@
+package com.gdn.onboarding.day1.gdnDay1.Calendar;
+
+import com.gdn.onboarding.day1.gdnDay1.Factorial.Factorial;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class CalendarTest {
+ Calendar c = new Calendar();
+ @Test
+ void printCalendarTest() {
+ String calendar = c.printCalendar(1);
+ Assertions.assertEquals("January",calendar);
+ calendar = c.printCalendar(2);
+ Assertions.assertEquals("February",calendar);
+ calendar = c.printCalendar(3);
+ Assertions.assertEquals("March",calendar);
+ calendar = c.printCalendar(4);
+ Assertions.assertEquals("April",calendar);
+ calendar = c.printCalendar(5);
+ Assertions.assertEquals("May",calendar);
+ calendar = c.printCalendar(6);
+ Assertions.assertEquals("June",calendar);
+ calendar = c.printCalendar(7);
+ Assertions.assertEquals("July",calendar);
+ calendar = c.printCalendar(8);
+ Assertions.assertEquals("August",calendar);
+ calendar = c.printCalendar(9);
+ Assertions.assertEquals("September",calendar);
+ calendar = c.printCalendar(10);
+ Assertions.assertEquals("October",calendar);
+ calendar = c.printCalendar(11);
+ Assertions.assertEquals("November",calendar);
+ calendar = c.printCalendar(12);
+ Assertions.assertEquals("December",calendar);
+ }
+
+ @Test
+ void calendarTest() {
+ Assertions.assertThrows(IllegalArgumentException.class,()->{
+ String calendar = c.printCalendar(-2);
+ Assertions.assertEquals("December",calendar);
+ });
+ }
+ @Test
+ void calendarTest2() {
+ Assertions.assertThrows(IllegalArgumentException.class,()->{
+ String calendar = c.printCalendar(13);
+ Assertions.assertEquals("December",calendar);
+ });
+ }
+}
\ No newline at end of file
diff --git a/src/test/java/com/gdn/onboarding/day1/gdnDay1/Factorial/FactorialTest.java b/src/test/java/com/gdn/onboarding/day1/gdnDay1/Factorial/FactorialTest.java
new file mode 100644
index 0000000..cfbe941
--- /dev/null
+++ b/src/test/java/com/gdn/onboarding/day1/gdnDay1/Factorial/FactorialTest.java
@@ -0,0 +1,28 @@
+package com.gdn.onboarding.day1.gdnDay1.Factorial;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class FactorialTest {
+
+ @Test
+ void factorialTest() {
+ Integer result = new Factorial().factorial(6);
+ Assertions.assertEquals(720,result);
+ }
+ @Test
+ void factorialTest2() {
+ Integer result = new Factorial().factorial(3);
+ Assertions.assertEquals(6,result);
+ }
+
+ @Test
+ void factorialTest3() {
+ Assertions.assertThrows(IllegalArgumentException.class,()->{
+ Integer result = new Factorial().factorial(-1);
+ Assertions.assertNotEquals(6,result);
+ });
+ }
+}
\ No newline at end of file
diff --git a/src/test/java/com/gdn/onboarding/day1/gdnDay1/GdnDay1ApplicationTests.java b/src/test/java/com/gdn/onboarding/day1/gdnDay1/GdnDay1ApplicationTests.java
new file mode 100644
index 0000000..e3aa580
--- /dev/null
+++ b/src/test/java/com/gdn/onboarding/day1/gdnDay1/GdnDay1ApplicationTests.java
@@ -0,0 +1,13 @@
+package com.gdn.onboarding.day1.gdnDay1;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class GdnDay1ApplicationTests {
+
+ @Test
+ void contextLoads() {
+ }
+
+}
diff --git a/src/test/java/com/gdn/onboarding/day1/gdnDay1/LetterGrade/LetterGradeTest.java b/src/test/java/com/gdn/onboarding/day1/gdnDay1/LetterGrade/LetterGradeTest.java
new file mode 100644
index 0000000..19d14cc
--- /dev/null
+++ b/src/test/java/com/gdn/onboarding/day1/gdnDay1/LetterGrade/LetterGradeTest.java
@@ -0,0 +1,57 @@
+package com.gdn.onboarding.day1.gdnDay1.LetterGrade;
+
+import com.gdn.onboarding.day1.gdnDay1.Factorial.Factorial;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class LetterGradeTest {
+
+ @Test
+ void checkGradeTestA() {
+ String grade = new LetterGrade().checkGrade(90);
+ Assertions.assertEquals("A",grade);
+ Assertions.assertNotEquals("B",grade);
+ }
+ @Test
+ void checkGradeTestAMin() {
+ String grade = new LetterGrade().checkGrade(85);
+ Assertions.assertEquals("A-",grade);
+ Assertions.assertNotEquals("B",grade);
+ }
+ @Test
+ void checkGradeTestBPlus() {
+ String grade = new LetterGrade().checkGrade(80);
+ Assertions.assertEquals("B+",grade);
+ Assertions.assertNotEquals("B",grade);
+ }
+ @Test
+ void checkGradeTestB() {
+ String grade = new LetterGrade().checkGrade(75);
+ Assertions.assertEquals("B",grade);
+ Assertions.assertNotEquals("A",grade);
+ }
+ @Test
+ void checkGradeTestC() {
+ String grade = new LetterGrade().checkGrade(50);
+ Assertions.assertEquals("C",grade);
+ Assertions.assertNotEquals("B",grade);
+ }
+
+ @Test
+ void checkGradeTest() {
+ Assertions.assertThrows(IllegalArgumentException.class,()->{
+ String grade = new LetterGrade().checkGrade(-20);
+ Assertions.assertNotEquals("C",grade);
+ });
+ }
+
+ @Test
+ void checkGradeTest2() {
+ Assertions.assertThrows(IllegalArgumentException.class,()->{
+ String grade = new LetterGrade().checkGrade(null);
+ Assertions.assertNotEquals("C",grade);
+ });
+ }
+}
\ No newline at end of file
diff --git a/src/test/java/com/gdn/onboarding/day1/gdnDay1/ToDoList/ToDoListTest.java b/src/test/java/com/gdn/onboarding/day1/gdnDay1/ToDoList/ToDoListTest.java
new file mode 100644
index 0000000..3b60345
--- /dev/null
+++ b/src/test/java/com/gdn/onboarding/day1/gdnDay1/ToDoList/ToDoListTest.java
@@ -0,0 +1,69 @@
+package com.gdn.onboarding.day1.gdnDay1.ToDoList;
+
+import com.gdn.onboarding.day1.gdnDay1.Calendar.Calendar;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.List;
+
+
+class ToDoListTest {
+ public Logger log = LoggerFactory.getLogger(ToDoList.class);
+
+ List list = new ArrayList<>();
+ ToDoList tdl = new ToDoList();
+
+ @Test
+ void addTest(){
+ list.add("test");
+ tdl.add("test");
+ Assertions.assertEquals(list.size(),tdl.list.size());
+ }
+
+ @Test
+ void addTest2(){
+ Assertions.assertThrows(IllegalArgumentException.class, ()->{
+ tdl.add(null);
+ });
+ }
+
+ @Test
+ void removeTest(){
+ list.add("test1");
+ tdl.add("test");
+ tdl.add("test1");
+ tdl.remove(0);
+ Assertions.assertEquals(list.get(0),tdl.list.get(0));
+ }
+
+ @Test
+ void removeTest2(){
+ tdl.add("test");
+ Assertions.assertThrows(ArrayIndexOutOfBoundsException.class, ()->{
+ tdl.remove(-2);
+ });
+ }
+
+ @Test
+ void removeTest3(){
+ Assertions.assertThrows(IllegalArgumentException.class, ()->{
+ tdl.remove(null);
+ });
+ }
+
+ @Test
+ void printTest(){
+ tdl.add("test");
+ Assertions.assertTrue(tdl.print());
+ }
+
+ @Test
+ void printTest2(){
+ Assertions.assertThrows(IllegalArgumentException.class, ()->{
+ Assertions.assertTrue(tdl.print());
+ });
+ }
+}
\ No newline at end of file
diff --git a/target/classes/application.properties b/target/classes/application.properties
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/target/classes/application.properties
@@ -0,0 +1 @@
+
diff --git a/target/classes/com/gdn/onboarding/day1/gdnDay1/BubbleSort/BubbleSort.class b/target/classes/com/gdn/onboarding/day1/gdnDay1/BubbleSort/BubbleSort.class
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index 0000000..82041f9
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diff --git a/target/classes/com/gdn/onboarding/day1/gdnDay1/Factorial/Factorial.class b/target/classes/com/gdn/onboarding/day1/gdnDay1/Factorial/Factorial.class
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diff --git a/target/classes/com/gdn/onboarding/day1/gdnDay1/GdnDay1Application.class b/target/classes/com/gdn/onboarding/day1/gdnDay1/GdnDay1Application.class
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diff --git a/target/classes/com/gdn/onboarding/day1/gdnDay1/ToDoList/ToDoList.class b/target/classes/com/gdn/onboarding/day1/gdnDay1/ToDoList/ToDoList.class
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diff --git a/target/test-classes/com/gdn/onboarding/day1/gdnDay1/Calendar/CalendarTest.class b/target/test-classes/com/gdn/onboarding/day1/gdnDay1/Calendar/CalendarTest.class
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diff --git a/target/test-classes/com/gdn/onboarding/day1/gdnDay1/ToDoList/ToDoListTest.class b/target/test-classes/com/gdn/onboarding/day1/gdnDay1/ToDoList/ToDoListTest.class
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