使用malloc转置数组

#include <stdio.h>
#include <stdlib.h>

void transpose(int **matrix, int rows, int cols) {
    int **transposed = (int **)malloc(cols * sizeof(int *));
    for (int i = 0; i < cols; i++) {
        transposed[i] = (int *)malloc(rows * sizeof(int));
        for (int j = 0; j < rows; j++) {
            transposed[i][j] = matrix[j][i];
        }
    }

    // 打印转置后的矩阵
    printf("Transposed Matrix:\n");
    for (int i = 0; i < cols; i++) {
        for (int j = 0; j < rows; j++) {
            printf("%d ", transposed[i][j]);
        }
        printf("\n");
    }

    // 释放内存
    for (int i = 0; i < cols; i++) {
        free(transposed[i]);
    }
    free(transposed);
}

int main() {
    int rows = 3, cols = 2;
    int **matrix = (int **)malloc(rows * sizeof(int *));
    for (int i = 0; i < rows; i++) {
        matrix[i] = (int *)malloc(cols * sizeof(int));
    }

    // 初始化矩阵
    int count = 1;
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            matrix[i][j] = count++;
        }
    }

    // 打印原矩阵
    printf("Original Matrix:\n");
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            printf("%d ", matrix[i][j]);
        }
        printf("\n");
    }

    // 转置矩阵
    transpose(matrix, rows, cols);

    // 释放原矩阵内存
    for (int i = 0; i < rows; i++) {
        free(matrix[i]);
    }
    free(matrix);

    return 0;
}