amdauduongcuoi.c

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



int *taomang(soluong){
    int i = 0;
    int *mang = (int *) malloc(soluong * sizeof(int));
    for ( ; i < soluong; ++i){
        scanf("%d", (mang + i));
    }
    
    return mang;
}


int inmang(int *mang, int soluong){
    int i = 0;
    for ( ; i < soluong; ++i){
        printf("%d\n", *(mang + i));
    }
}


int *amdauduongcuoi(int *mang, int soluong){
    int dau = 0;
    int cuoi = soluong - 1;
    int i = 0;
    for ( ; dau < cuoi || i < soluong ; ++i ){
        if(*(mang + i) < 0 ){
            int tmp = *(mang + i);
            *(mang + i) = *(mang + dau);
            *(mang + dau) = tmp;
            dau++;
        } else if ( *(mang + i) > 0){
            int tmp = *(mang + i);
            *(mang + i) = *(mang + cuoi);
            *(mang + cuoi) = tmp;
            cuoi --;
        }
    }
    return mang;
}


int main(){

    printf("Nhap so phan tu, sau do nhap mang: \n");
    int soluong;
    scanf("%d", &soluong);

    int *mang = taomang(soluong);
    amdauduongcuoi(mang, soluong);
    inmang(mang, soluong);

}