Create Convert 1D Array Into 2D Array.java

varunu28 · web-flow · commit 2b51bee30876 · 2021-10-03T07:22:12.000-05:00
diff --git a/Easy/Convert 1D Array Into 2D Array.java b/Easy/Convert 1D Array Into 2D Array.java
@@ -0,0 +1,17 @@
+class Solution {
+  public int[][] construct2DArray(int[] original, int m, int n) {
+    if (m * n != original.length) {
+      return new int[][]{};
+    }
+    int[][] arr = new int[m][n];
+    int idx = 0;
+    int arrIdx = 0;
+    while (idx < original.length) {
+      for (int i = 0; i < n; i++) {
+        arr[arrIdx][i] = original[idx++];
+      }
+      arrIdx++;
+    }
+    return arr;
+  }
+}
