Feat: 배열, 연결 리스트, 스택, 큐 2문제

Author: lja0395

1주차/이진아/레벨1__같은_숫자는_싫어.js

@@ -0,0 +1,9 @@
+function solution(arr) {
+    var answer = [];
+    for(let i = 0; i < arr.length; i++){
+        if(arr[i] !== arr[i+1]){
+            answer.push(arr[i])
+        }
+    }
+    return answer;
+}

1주차/이진아/레벨2__올바른_괄호.js

@@ -0,0 +1,23 @@
+function solution(s){
+    var answer = true;
+    let arr=[];
+      
+    for(let i=0;i<s.length;i++) {
+      if(s[i]==='(') { 
+        arr.push('(')
+      }
+      else { 
+        if(arr[arr.length-1]==='(') {
+            arr.pop();
+        }
+        else {
+            arr.push(')');
+        }
+      }
+    }
+   
+    if(arr.length!==0) {
+        answer = false;
+    }
+    return answer;
+  }