C语言逆序排列在算法设计中的应用_云计算

发布时间:2024-10-02 01:26

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在算法设计中，逆序排列是一种常见的操作。它可以应用于各种数据结构和场景，例如数组、链表、字符串等。下面是一些使用C语言实现逆序排列的示例：

逆序排列数组：

#include<stdio.h>  void reverseArray(int arr[], int start, int end) {     int temp;     while (start < end) {         temp = arr[start];         arr[start] = arr[end];         arr[end] = temp;         start++;         end--;     } }  int main() {     int arr[] = {1, 2, 3, 4, 5};     int n = sizeof(arr) / sizeof(arr[0]);      printf("Original array: ");     for (int i = 0; i < n; i++) {         printf("%d ", arr[i]);     }     printf("\n");      reverseArray(arr, 0, n - 1);      printf("Reversed array: ");     for (int i = 0; i < n; i++) {         printf("%d ", arr[i]);     }     printf("\n");      return 0; }

逆序排列链表：

#include<stdio.h> #include <stdlib.h>  struct Node {     int data;     struct Node* next; };  struct Node* reverseList(struct Node* head) {     struct Node *prev = NULL;     struct Node *current = head;     struct Node *next = NULL;      while (current != NULL) {         next = current->next;         current->next = prev;         prev = current;         current = next;     }      return prev; }  void printList(struct Node* head) {     while (head != NULL) {         printf("%d -> ", head->data);         head = head->next;     }     printf("NULL\n"); }  int main() {     struct Node* head = NULL;     struct Node* temp;     int arr[] = {1, 2, 3, 4, 5};     int n = sizeof(arr) / sizeof(arr[0]);      for (int i = n - 1; i >= 0; i--) {         temp = (struct Node*)malloc(sizeof(struct Node));         temp->data = arr[i];         temp->next = head;         head = temp;     }      printf("Original list: ");     printList(head);      head = reverseList(head);      printf("Reversed list: ");     printList(head);      return 0; }

逆序排列字符串：

#include<stdio.h> #include<string.h>  void reverseString(char* str) {     int len = strlen(str);     char temp;      for (int i = 0; i < len / 2; i++) {         temp = str[i];         str[i] = str[len - 1 - i];         str[len - 1 - i] = temp;     } }  int main() {     char str[] = "Hello, world!";      printf("Original string: %s\n", str);      reverseString(str);      printf("Reversed string: %s\n", str);      return 0; }