标签:排序 temp int void while step && 数据结构
#include <bits/stdc++.h>
using namespace std;
int n,a[1000],b[1000];
void QuickSort(int a[],int l,int r) {
if (l < r) {
int x = a[l], i = l, j = r;
while (i < j) {
while (i < j && a[j] >= x) j--;
if (i < j) a[i++] = a[j];
while (i < j && a[i] <= x) i++;
if (i < j) a[j--] = a[i];
}
a[i] = x;
QuickSort(a, l, i - 1);
QuickSort(a, i + 1, r);
}
}
void merge_sort(int l,int r) {
if (l == r) {
return;
}
int mid = l + r >> 1;
merge_sort(l, mid);
merge_sort(mid + 1, r);
int i = l, j = mid + 1, k = l;
while (i <= mid && j <= r) {
if (a[i] <= a[j]) {
b[k++] = a[i++];
} else {
//ans += mid - i + 1;
b[k++] = a[j++];
}
}
while (i <= mid) {
b[k++] = a[i++];
}
while (j <= r) {
b[k++] = a[j++];
}
for (int i = l; i <= r; i++) {
a[i] = b[i];
}
}
void insert_sort(int a[],int n) {
for (int i = 2,j; i <=n; i++) {
for (j = 1; j < i; j++) {
if (a[i] < a[j])
break;
}
if (i != j) {
int key = a[i];
for (int k = i; k > j; k--)
a[k] = a[k - 1];
a[j] = key;
}
}
}
void bobbleSort(int a[],int n) {
for (int i = 1; i <=n; i++) {
for (int j = 1; j <=n- i; j++) {
if (a[j] > a[j + 1]) {
int temp = a[j];
a[j] = a[j + 1];
a[j + 1] = temp;
}
}
}
}
void down(int a[],int n, int i) {
while (i*2 <= n) {
i=i*2;
if (i + 1 <= n && a[i] < a[i + 1]) {
i++;
}
if (a[i] >= a[i / 2]) {
swap(a[i], a[i / 2]);
} else break;
}
}
void heapsort(int a[],int n) {
for (int i = n / 2; i >= 1; i--) {
down(a,n, i);
}
for (int i = n; i >= 1; i--) {
swap(a[i], a[1]);
down(a,i - 1, 1);
}
}
void selectSort(int a[],int n) {
for (int i = 1; i < n; i++) {
int mi = i;
for (int j = i + 1; j <= n; j++) {
if (a[j] < a[mi]) {
mi = j;
}
}
if (mi != i) {
swap(a[i], a[mi]);
}
}
}
void shellSort(int a[],int n) {
for (int step = n >> 1; step > 0; step >>= 1) {
for (int i = step; i <=n; i += step) {
int j = i - step;
int temp = a[i];
while (j >= 1 && a[j] > temp) {
a[j + step] = a[j];
j -= step;
}
a[j + step] = temp;
}
}
}
void print(int a[],int n) {
for (int i = 1; i <= n; i++) {
cout << a[i] << " ";
}
cout << endl;
}
int main() {
srand((int) time(NULL));
int n = rand() % 40;
for (int i = 1; i <= n; i++) {
a[i] = rand() % 1000;
}
random_shuffle(a + 1, a + n + 1);
QuickSort(a, 1, n);
print(a, n);
random_shuffle(a + 1, a + n + 1);
merge_sort(1, n);
print(a, n);
random_shuffle(a + 1, a + n + 1);
insert_sort(a, n);
print(a, n);
random_shuffle(a + 1, a + n + 1);
bobbleSort(a, n);
print(a, n);
random_shuffle(a + 1, a + n + 1);
selectSort(a, n);
print(a, n);
random_shuffle(a + 1, a + n + 1);
heapsort(a, n);
print(a, n);
random_shuffle(a + 1, a + n + 1);
shellSort(a, n);
print(a, n);
}
标签:排序,temp,int,void,while,step,&&,数据结构 来源: https://www.cnblogs.com/Accpted/p/13087045.html
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