Merge pull request #128 from front-studium/Insung-Jo

`week28` 문제 완료

Author: Insung-Jo

Insung-Jo/level_0/대문자와 소문자.js

@@ -0,0 +1,13 @@
+function solution(my_string) {
+  const REGEX = /[a-z]/;
+  let word = my_string.split("");
+  let answer = [];
+
+  for (let i = 0; i < my_string.length; i++) {
+    if (word[i].match(REGEX)) {
+      answer.push(word[i].toUpperCase());
+    } else answer.push(word[i].toLowerCase());
+  }
+
+  return answer.join("");
+}

Insung-Jo/level_0/인덱스 바꾸기.js

@@ -0,0 +1,8 @@
+function solution(my_string, num1, num2) {
+  const answer = my_string.split("");
+  const temp = answer[num1];
+  answer[num1] = answer[num2];
+  answer[num2] = temp;
+
+  return answer.join("");
+}

Insung-Jo/level_1/짝수와 홀수.js

@@ -0,0 +1,5 @@
+function solution(num) {
+  const number = Math.abs(num);
+  if (number % 2 === 1 || number < 0) return "Odd";
+  if (number % 2 === 0 || number === 0) return "Even";
+}