Solution: Convert 1D Array Into 2D Array
Understand how to reshape a one-dimensional integer array into a specified two-dimensional array by verifying size compatibility and systematically populating rows and columns. This lesson helps you implement and analyze an efficient approach to transform arrays preserving their order, while learning to validate input dimensions and manage cases where reshaping is not possible.
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Statement
Given a 0-indexed 1-dimensional (1D) integer array original and two integers, m and n, your task is to reshape the array into a 2-dimensional (2D) array with m rows and n columns while preserving the order of elements in original.
To construct the 2D array, the first n elements in the original should populate the first row. The next n elements should populate the second row, and so on, until all rows are filled. Your goal is to return the resulting m x n 2D array.
Note: If it is impossible to create an
m x narray (e.g., if the total number of elements in theoriginalis not equal tom * n), return an empty 2D array.
Constraints: ...