uploaded at 2022. 12. 16. 오후 8:35:35

programmers/소수 찾기/solution.java

@@ -0,0 +1,18 @@
+// [문제 링크]: https://school.programmers.co.kr/learn/courses/30/lessons/12921
+
+class Solution {
+    public int solution(int n) {
+        int answer = 0;
+        for(int a = 2; a<=n; a++){
+            int t = 0;
+            for(int b=2; b<=Math.sqrt(a); b++){
+                if(a%b==0) {
+                    t = 1;
+                    break;
+                }
+            }
+            if(t == 0) answer+= 1;
+        }
+        return answer;
+    }
+}