void bubbleSort(int* A, int n) {
int i, j, tmp;
for (i = 0; i < n; i++) {
for (j = 0; j < n-1; j++) {
if (A[j] > A[j+1]) {
tmp = A[j];
A[j] = A[j+1];
A[j+1] = tmp;
}