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1. 鍖呭惈澶存枃浠讹細#include<algorithm>

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#include<algorithm>
#include<iostream>

int main() {
    int arr[] = {5, 2, 8, 4, 1};
    int n = sizeof(arr) / sizeof(arr[0]);

    std::sort(arr, arr + n);

    for(int i = 0; i < n; i++) {
        std::cout << arr[i] << " ";
    }

    return 0;
}

杈撳嚭缁撴灉涓猴細1 2 4 5 8

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渚嬪锛屽涓€涓暣鍨嬫暟缁勮繘琛岄檷搴忔帓搴忕殑绀轰緥浠ｇ爜濡備笅锛?/p>

#include<algorithm>
#include<iostream>

bool compare(int a, int b) {
    return a > b;
}

int main() {
    int arr[] = {5, 2, 8, 4, 1};
    int n = sizeof(arr) / sizeof(arr[0]);

    std::sort(arr, arr + n, compare);

    for(int i = 0; i < n; i++) {
        std::cout << arr[i] << " ";
    }

    return 0;
}

杈撳嚭缁撴灉涓猴細8 5 4 2 1