Transpose Matrix

class Solution {
public:
    vector<vector<int>> transpose(vector<vector<int>>& matrix) {
        int m = matrix.size(), n = matrix[0].size();
        vector<vector<int>> ans(n, vector<int>(m));
        for (int i = 0; i < m; ++i)
            for (int j = 0; j < n; ++j)
                ans[j][i] = matrix[i][j];
        return ans;
    }
};

func transpose(matrix [][]int) [][]int {
  m, n := len(matrix), len(matrix[0])
  ans := make([][]int, n)
  for i := range ans {
    ans[i] = make([]int, m)
  }
  for i := 0; i < m; i++ {
    for j := 0; j < n; j++ {
      ans[j][i] = matrix[i][j]
    }
  }
  return ans
}

from typing import List

class Solution:
    def transpose(self, matrix: List[List[int]]) -> List[List[int]]:
        m, n = len(matrix), len(matrix[0])
        ans = [[0] * m for _ in range(n)]
        for i in range(m):
            for j in range(n):
                ans[j][i] = matrix[i][j]
        return ans

var transpose = function(matrix) {
    const m = matrix.length, n = matrix[0].length;
    const ans = Array.from({ length: n }, () => new Array(m));
    for (let i = 0; i < m; i++) {
        for (let j = 0; j < n; j++) {
            ans[j][i] = matrix[i][j];
        }
    }
    return ans;
};

class Solution {
    public int[][] transpose(int[][] matrix) {
        int m = matrix.length, n = matrix[0].length;
        int[][] ans = new int[n][m];
        for (int i = 0; i < m; i++) {
            for (int j = 0; j < n; j++) {
                ans[j][i] = matrix[i][j];
            }
        }
        return ans;
    }
}

function transpose(matrix: number[][]): number[][] {
    const m: number = matrix.length, n: number = matrix[0].length;
    const ans: number[][] = Array.from({ length: n }, () => new Array(m));
    for (let i = 0; i < m; i++) {
        for (let j = 0; j < n; j++) {
            ans[j][i] = matrix[i][j];
        }
    }
    return ans;
}