C++ 程序实现冒泡排序
冒泡排序是一种基于比较的排序算法。在该算法中,将相邻元素进行比较和交换,以形成正确的序列。该算法比其他算法更简单,但也存在一些缺点。该算法不适用于海量数据集。它需要花费大量时间来解决排序任务。
冒泡排序技术的复杂度
时间复杂度:最好情况 O(n),平均情况和最坏情况 O(n2)
空间复杂度:O(1)
Input − A list of unsorted data: 56 98 78 12 30 51 Output − Array after Sorting: 12 30 51 56 78 98
算法
bubbleSort(数组,大小)
输入:数据数组和数组中的总数
输出:排序后的数组
Begin
for i := 0 to size-1 do
flag := 0;
for j:= 0 to size –i – 1 do
if array[j] > array[j+1] then
swap array[j] with array[j+1]
flag := 1
done
if flag ≠ 1 then
break the loop.
done
End示例代码
#include<iostream>
using namespace std;
void swapping(int &a, int &b) { //swap the content of a and b
int temp;
temp = a;
a = b;
b = temp;
}
void display(int *array, int size) {
for(int i = 0; i<size; i++)
cout << array[i] << " ";
cout << endl;
}
void bubbleSort(int *array, int size) {
for(int i = 0; i<size; i++) {
int swaps = 0; //flag to detect any swap is there or not
for(int j = 0; j<size-i-1; j++) {
if(array[j] > array[j+1]) { //when the current item is bigger than next
swapping(array[j], array[j+1]);
swaps = 1; //set swap flag
}
}
if(!swaps)
break; // No swap in this pass, so array is sorted
}
}
int main() {
int n;
cout << "Enter the number of elements: ";
cin >> n;
int arr[n]; //create an array with given number of elements
cout << "Enter elements:" << endl;
for(int i = 0; i<n; i++) {
cin >> arr[i];
}
cout << "Array before Sorting: ";
display(arr, n);
bubbleSort(arr, n);
cout << "Array after Sorting: ";
display(arr, n);
}输出
Enter the number of elements: 6 Enter elements: 56 98 78 12 30 51 Array before Sorting: 56 98 78 12 30 51 Array after Sorting: 12 30 51 56 78 98
广告
数据结构
网络
RDBMS
操作系统
Java
iOS
HTML
CSS
Android
Python
C 编程
C++
C#
MongoDB
MySQL
Javascript
PHP