`C`

`" "`

#include <stdio.h>

int a[100], n;

void nhap() {
    int i;
    printf("Nhap n: ");
    scanf("%d", &n);
    
    printf("Nhap n phan tu: ");
    for(i = 0; i < n; i++)
        scanf("%d", &a[i]);
}

void in() {
    int i;
    for(i = 0; i < n; i++)
        printf("%d ", a[i]);
    printf("\n");
}

void tang() {
    int i, j, t;
    for(i = 0; i < n-1; i++)
        for(j = i+1; j < n; j++)
            if(a[i] > a[j]) {
                t = a[i];
                a[i] = a[j];
                a[j] = t;
            }
}

void giam() {
    int i, j, t;
    for(i = 0; i < n-1; i++)
        for(j = i+1; j < n; j++)
            if(a[i] < a[j]) {
                t = a[i];
                a[i] = a[j];
                a[j] = t;
            }
}

void menu() {
    int c;
    
    printf("1. Sap xep tang dan\n");
    printf("2. Sap xep giam dan\n");
    printf("Khac: Thoat\n");
    printf("Chon: ");
    scanf("%d", &c);

    if(c == 1) {
        tang();
        printf("Mang xep tang dan: ");
        in();
    } 
    else if(c == 2) {
        giam();
        printf("Mang xep giam dan: ");
        in();
    } 
    else {
        printf("Thoat\n");
        return;
    } 

    menu();
}

int main() {
    nhap();
    menu();
    
    return 0;
}