Merge pull request #434 from planet-devo-k/Insung-Jo

`week48`  문제 완료

Author: Insung-Jo

Insung-Jo/level_0/부분 문자열.js

@@ -0,0 +1,3 @@
+function solution(str1, str2) {
+  return str2.includes(str1) ? 1 : 0;
+}

Insung-Jo/level_0/부분 문자열인지 확인하기.js

@@ -0,0 +1,3 @@
+function solution(my_string, target) {
+  return my_string.includes(target) ? 1 : 0;
+}

Insung-Jo/level_1/내적.js

@@ -0,0 +1,9 @@
+function solution(a, b) {
+  let sum = 0;
+
+  for (let i = 0; i < a.length; i++) {
+    sum += a[i] * b[i];
+  }
+
+  return sum;
+}