first commit

J02101 - IN MA TRẬN.java

@@ -0,0 +1,29 @@
+package nyagami;
+
+import java.util.Scanner;
+
+public class test{
+    public static void main(String[] arg){
+        Scanner sc = new Scanner(System.in);
+        int t = sc.nextInt();
+        while(t-->0){
+            int n = sc.nextInt();
+            int[][] a = new int[n][n];
+            for(int i=0; i<n; i++){
+                for(int j=0; j<n; j++) a[i][j] = sc.nextInt();
+            }
+            int j = 0;
+            for(int i=0; i<n; i++){
+                if(j==0){
+                    for(; j<n; j++) System.out.printf("%d ", a[i][j]);
+                    j=n-1;
+                }else{
+                    for(; j>=0; j--) System.out.printf("%d ", a[i][j]);
+                    j=0;
+                }
+            }
+            System.out.println("");
+        }
+        sc.close();
+    }
+}