Package g2001_2100.s2022_convert_1d_array_into_2d_array

Class Solution

java.lang.Object

g2001_2100.s2022_convert_1d_array_into_2d_array.Solution

public class Solution
extends Object

2022 - Convert 1D Array Into 2D Array\. Easy You are given a **0-indexed** 1-dimensional (1D) integer array `original`, and two integers, `m` and `n`. You are tasked with creating a 2-dimensional (2D) array with `m` rows and `n` columns using **all** the elements from `original`. The elements from indices `0` to `n - 1` ( **inclusive** ) of `original` should form the first row of the constructed 2D array, the elements from indices `n` to `2 * n - 1` ( **inclusive** ) should form the second row of the constructed 2D array, and so on. Return _an_ `m x n` _2D array constructed according to the above procedure, or an empty 2D array if it is impossible_. **Example 1:**  **Input:** original = [1,2,3,4], m = 2, n = 2 **Output:** [[1,2],[3,4]] **Explanation:** The constructed 2D array should contain 2 rows and 2 columns. The first group of n=2 elements in original, [1,2], becomes the first row in the constructed 2D array. The second group of n=2 elements in original, [3,4], becomes the second row in the constructed 2D array. **Example 2:** **Input:** original = [1,2,3], m = 1, n = 3 **Output:** [[1,2,3]] **Explanation:** The constructed 2D array should contain 1 row and 3 columns. Put all three elements in original into the first row of the constructed 2D array. **Example 3:** **Input:** original = [1,2], m = 1, n = 1 **Output:** [] **Explanation:** There are 2 elements in original. It is impossible to fit 2 elements in a 1x1 2D array, so return an empty 2D array. **Constraints:** * 1 <= original.length <= 5 * 104 * 1 <= original[i] <= 105 * 1 <= m, n <= 4 * 104

Constructor Summary

Constructors

Constructor	Description
Solution()

Method Summary

Modifier and Type	Method	Description
int[][]	construct2DArray(int[] original, int m, int n)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Solution

public Solution()

Method Detail

construct2DArray

public int[][] construct2DArray(int[] original,
                                int m,
                                int n)