Merge remote-tracking branch 'refs/remotes/origin/main'

Author: CHOOSLA

2025-09-12/김소희/프로그래머스_삼각달팽이.java

@@ -0,0 +1,30 @@
+class Solution {
+    public int[] solution(int n) {
+        int[][] arr = new int[n][n];
+        int size = n*(n+1)/2;
+        int [] answer = new int[size];
+        
+        int y=-1,x=0;
+        int num=1;
+        for(int i=0; i<n; i++){
+            for(int j=i; j<n; j++){
+                if(i%3 ==0){ //아래
+                    y++;
+                }else if(i%3 ==1){//오른쪽
+                    x++;
+                }else{ //대각선
+                    y--;
+                    x--;
+                }
+                arr[y][x]=num++;
+            } 
+        }
+        int index=0;
+        for(int i=0; i<n; i++){
+            for(int j=0; j<=i; j++){
+                answer[index++]=arr[i][j];
+            }
+        }
+        return answer;
+    }
+}