Solution: Convert 1D Array Into 2D Array
Understand how to transform a one-dimensional integer array into a two-dimensional matrix by verifying the reshaping conditions and filling the 2D array in order. Learn to check array length compatibility, initialize the matrix, and assign elements correctly to solve this common coding interview problem.
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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 array.
Constraints: ...