contains duplicate solution

Author: minji0214

contains-duplicate/minji0214.ts

@@ -0,0 +1,10 @@
+function containsDuplicate(nums: number[]): boolean {
+    let answer = false
+  for(let i = 0; i< nums.length; i ++ ){
+    if(nums.findIndex((value)=> value === nums[i]) !== i){
+        answer = true
+        return false
+     }
+    }  
+    return answer
+};