Convert 1D Array Into 2D Array
给一个一维数组和整数m和n, 变成二维数组[m][n];
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class Solution { public int[][] construct2DArray(int[] original, int m, int n) { int[][] res = new int[m][n]; if(m*n != original.length) return new int[][]{}; int p = 0; for(int i = 0; i < m; i++){ for(int j = 0; j < n; j++){ res[i][j] = original[p++]; } } return res; } } |