week40 문제 풀었습니다.

sgoldenbird/level0/문자열_곱하기.js

@@ -1 +1,7 @@
-test;
+function solution(my_string, k) {
+  let answer = "";
+  for (let i = 1; i <= k; i++) {
+    answer += my_string;
+  }
+  return answer;
+}

sgoldenbird/level0/원소들의_곱과_합.js

@@ -0,0 +1,9 @@
+function solution(num_list) {
+  let sum = 0;
+  let mul = 1;
+  for (const num of num_list) {
+    sum += num;
+    mul *= num;
+  }
+  return mul < sum ** 2 ? 1 : 0;
+}

sgoldenbird/level1/음양_더하기.js

@@ -0,0 +1,7 @@
+function solution(absolutes, signs) {
+  let sum = 0;
+  for (let i = 0; i < absolutes.length; i++) {
+    sum += signs[i] === true ? absolutes[i] : -absolutes[i];
+  }
+  return sum;
+}