uploaded at 2022. 12. 16. 오후 8:42:47

programmers/폰켓몬/solution.java

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+// [문제 링크]: https://school.programmers.co.kr/learn/courses/30/lessons/1845
+
+import java.util.HashMap;
+class Solution {
+    public int solution(int[] nums) {
+        int answer = 0;
+        HashMap<Integer, Integer> hash = new HashMap<>();
+        for(int a : nums){
+            hash.put(a,hash.getOrDefault(a,0)+1);
+        }
+        for(Integer b : hash.keySet()){
+            answer += 1;
+        }
+        return (answer > nums.length/2) ? nums.length/2 : answer;
+    }
+}