Create 프로그래머스_삼각달팽이.java

Author: taemin3

2025-08-21/김태민/프로그래머스_삼각달팽이.java

@@ -0,0 +1,29 @@
+class Solution {
+    public int[] solution(int n) {
+        int[] answer = new int [n*(n+1)/2];
+        int [][] array = new int[n][n];
+        int num = 1;
+        int x = -1;
+        int y = 0;
+        for (int i = 0;i < n;i++) {
+            for (int j = i; j < n; j++) {
+                if (i % 3 == 0) {
+                    x++;
+                } else if(i % 3 == 1) {
+                    y++;
+                } else {
+                    x--;
+                    y--;
+                }
+                array[x][y] = num++;
+            }
+        }
+        int idx = 0;
+        for (int i = 0; i < n; i++) {
+            for (int j = 0; j <= i ; j++) {
+                answer[idx++] = array[i][j];
+            }
+        }
+        return answer;
+    
+}}