array matrix copy of range

Author: Gauranshgoel123

convert-1d-array-into-2d-array.java

@@ -10,3 +10,21 @@ public int[][] construct2DArray(int[] original, int m, int n) {
         return arr;
     }
 }
+// class Solution {
+//     public int[][] construct2DArray(int[] original, int m, int n) {
+//         if(m*n!=original.length){
+//             return new int[0][0];
+//         }
+//         int ans[][]=new int[m][n];
+//         int row=0;
+//         int col=0;
+//         for(int i=0;i<original.length;i++){
+//             ans[row][col++]=original[i];
+//             if(col==n){
+//                 col=0;
+//                 row++;
+//             }
+//         }
+//         return ans;
+//     }
+// }