"Contains Duplicate 문제"

Author: ymir0804

contains-duplicate/ymir0916.java

@@ -0,0 +1,20 @@
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+class Solution {
+    public boolean containsDuplicate(int[] nums) {
+        List<Integer> list = Arrays.stream(nums).boxed().collect(Collectors.toList());
+        for (int i : nums) {
+            int idx = list.indexOf(i);
+            if (idx == -1) {
+                continue;
+            }
+            list.remove(idx);
+            if (list.contains(i)) {
+                return true;
+            }
+        }
+        return false;
+    }
+}