Week40 문제풀이

yujin-level0/Week40/문자열 곱하기.js

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+function solution(my_string, k) {
+    return my_string.repeat(k);
+}

yujin-level0/Week40/원소들의 곱과 합.js

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+function solution(num_list) {
+    let sum = 0;
+    let times = 1;
+    for(const num of num_list) {
+        sum += num;
+        times *= num;
+    }
+    return sum ** 2 > times ? 1 : 0;
+}
+
+// 다른 풀이
+function solution(num_list) {
+    let mul = num_list.reduce((a, c) => {return a*c ;}, 1);
+    let sum = num_list.reduce((a, c) => {return a+c ;}, 0);
+    return (mul < sum*sum) ? 1 : 0;
+}

yujin-level0/Week40/음양 더하기.js

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+function solution(absolutes, signs) {
+    let result = 0;
+    for(let i = 0; i < signs.length; i++) {
+        signs[i] ? result += absolutes[i] : result -= absolutes[i]
+    }
+    return result;
+}
+
+// 다른 풀이
+function solution(absolutes, signs) {
+    return absolutes.reduce((acc, val, i) => acc + (val * (signs[i] ? 1 : -1)), 0);
+}