rivkode missing number array 풀이 추가

Author: rivkode

missing-number/rivkode.java

@@ -29,6 +29,18 @@
 
 class Solution {
     public int missingNumber(int[] nums) {
+        /*
+        Array 풀이
+        Arrays.sort(nums);
+
+        for (int i=0; i<nums.length; i++) {
+            if (nums[i] != i) {
+                return i;
+            }
+        }
+
+        return nums.length;
+        */
         Set<Integer> set = new HashSet<>();
 
         for (int i: nums) {