W3Schools 線上編輯器 - W3Schools 教學

Python

Java

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

#define SIZE 8

void radix_sort(int arr[], int size) {
    int max_val = arr[0];
    for(int i = 1; i < size; i++) {
        if(arr[i] > max_val) {
            max_val = arr[i];
        }
    }

int exp = 1;
    int *radix_array[10];
    for(int i = 0; i < 10; i++) {
        radix_array[i] = (int *)malloc(sizeof(int) * size);
    }
    int counts[10] = {0};

while (max_val / exp > 0) {
        for(int i = 0; i < size; i++) {
            int radix_index = (arr[i] / exp) % 10;
            radix_array[radix_index][counts[radix_index]] = arr[i];
            counts[radix_index]++;
        }

int pos = 0;
        for(int i = 0; i < 10; i++) {
            for(int j = 0; j < counts[i]; j++) {
                arr[pos] = radix_array[i][j];
                pos++;
            }
            counts[i] = 0;
        }

exp *= 10;
    }

for(int i = 0; i < 10; i++) {
        free(radix_array[i]);
    }
}

int main() {
    int arr[SIZE] = {170, 45, 75, 90, 802, 24, 2, 66};
    printf("Original array: ");
    for(int i = 0; i < SIZE; i++) {
        printf("%d ", arr[i]);
    }
    printf("\n");

radix_sort(arr, SIZE);

printf("Sorted array: ");
    for(int i = 0; i < SIZE; i++) {
        printf("%d ", arr[i]);
    }
    printf("\n");

return 0;
}

//C

public class Main {
    public static void main(String[] args) {
        int[] myArray = {170, 45, 75, 90, 802, 24, 2, 66};
        System.out.print("Original array: ");
        for(int val : myArray) {
            System.out.print(val + " ");
        }
        System.out.println();

int[][] radixArray = new int[10][myArray.length];
        int[] counts = new int[10];
        int maxVal = findMax(myArray);
        int exp = 1;

while (maxVal / exp > 0) {
            for(int val : myArray) {
                int radixIndex = (val / exp) % 10;
                radixArray[radixIndex][counts[radixIndex]] = val;
                counts[radixIndex]++;
            }

int pos = 0;
            for(int i = 0; i < 10; i++) {
                for(int j = 0; j < counts[i]; j++) {
                    myArray[pos] = radixArray[i][j];
                    pos++;
                }
                counts[i] = 0;
            }

exp *= 10;
        }

System.out.print("Sorted array: ");
        for(int val : myArray) {
            System.out.print(val + " ");
        }
        System.out.println();
    }

public static int findMax(int[] arr) {
        int max = arr[0];
        for(int val : arr) {
            if(val > max) {
                max = val;
            }
        }
        return max;
    }
}

//Java