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将10进制数转为2进制(16位)，每4个二进制数空1格，不足的位数补0

Python源码

import java.util.Scanner;

public class BinaryConverter {

    public static void main(String[] args) {
        System.out.print("请输入一个整数：");
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        scanner.close();

        int[] binaryArray = convertToBinary(n);
        printBinaryArray(binaryArray);
    }

    // 将整数转换为二进制数组
    public static int[] convertToBinary(int n) {
        int[] binaryArray = new int[16];
        int m = n;
        int k = binaryArray.length - 1;
        do {
            binaryArray[k] = m % 2;
            m /= 2;
            k--;
        } while (m != 0);
        return binaryArray;
    }

    // 打印二进制数组，每4个二进制数空一格
    public static void printBinaryArray(int[] binaryArray) {
        StringBuilder stringBuilder = new StringBuilder();
        for (int i = 0; i < binaryArray.length; i++) {
            stringBuilder.append(binaryArray[i]);
            if ((i + 1) % 4 == 0 && i != binaryArray.length - 1) {
                stringBuilder.append(" ");
            }
        }
        System.out.println("二进制表示为：" + stringBuilder.toString());
    }
}

C语言源码

#include <stdio.h>

// 将整数转换为二进制数组
void convertToBinary(int n, int binaryArray[]) {
    int m = n;
    int k = 15;
    do {
        binaryArray[k] = m % 2;
        m /= 2;
        k--;
    } while (m != 0);
}

// 打印二进制数组，每4个二进制数空一格
void printBinaryArray(int binaryArray[]) {
    for (int i = 0; i < 16; i++) {
        printf("%d", binaryArray[i]);
        if ((i + 1) % 4 == 0 && i != 15) {
            printf(" ");
        }
    }
    printf("\n");
}

int main() {
    printf("请输入一个整数：");
    int n;
    scanf("%d", &n);

    int binaryArray[16];
    convertToBinary(n, binaryArray);
    printf("二进制表示为：");
    printBinaryArray(binaryArray);

    return 0;
}

Java源码

import java.util.Scanner;

public class BinaryConverter {

    // 将整数转换为二进制数组
    public static void convertToBinary(int n, int[] binaryArray) {
        int m = n;
        int k = 15;
        do {
            binaryArray[k] = m % 2;
            m /= 2;
            k--;
        } while (m != 0);
    }

    // 打印二进制数组，每4个二进制数空一格
    public static void printBinaryArray(int[] binaryArray) {
        StringBuilder stringBuilder = new StringBuilder();
        for (int i = 0; i < 16; i++) {
            stringBuilder.append(binaryArray[i]);
            if ((i + 1) % 4 == 0 && i != 15) {
                stringBuilder.append(" ");
            }
        }
        System.out.println("二进制表示为：" + stringBuilder.toString());
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入一个整数：");
        int n = scanner.nextInt();
        scanner.close();

        int[] binaryArray = new int[16];
        convertToBinary(n, binaryArray);
        printBinaryArray(binaryArray);
    }
}