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13 changes: 13 additions & 0 deletions yujin-level0/Week48/내적.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
function solution(a, b) {
let result = 0;
for (let i = 0; i < a.length; i++) {
result += a[i] * b[i];
}
return result;
}

// 다른 풀이
// array.reduce((누적값, 현재값, 인덱스, 원본배열) => { ... }, 초깃값)
function solution(a, b) {
return a.reduce((acc, cur, i) => acc + cur * b[i], 0);
}
3 changes: 3 additions & 0 deletions yujin-level0/Week48/부분 문자열.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
function solution(str1, str2) {
return str2.includes(str1) ? 1 : 0;
}
4 changes: 4 additions & 0 deletions yujin-level0/Week48/부분 문자열인지 확인하기.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,4 @@
function solution(my_string, target) {
return +my_string.includes(target);
}
// boolean의 숫자화: true -> 1 / false -> 0
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