单链表中节点的乘积
给定 n 个节点,任务是打印单链表中所有节点的乘积。该程序必须遍历单链表的所有节点,从初始节点开始,直到没有找到 NULL 为止。
示例
Input -: 1 2 3 4 5 Output -: 120
在上述示例中,从第一个节点开始遍历所有节点,即 1、2、3、4、5、6,它们的乘积为 1*2*3*4*5*6 = 120
下面使用的算法如下
- 取一个临时指针,例如节点类型的 temp
- 将此 temp 指针设置为由 head 指针指向的第一个节点
- 将 temp 移动到 temp->next,直到 temp 不为 NULL。
- 设置 product=product*(temp->data)
算法
Start Step 1 -> create structure of a node and temp, next and head as pointer to a structure node struct node int data struct node *next, *head, *temp End Step 2 -> declare function to insert a node in a list void insert(int val) struct node* newnode = (struct node*)malloc(sizeof(struct node)) newnode->data = val IF head= NULL set head = newnode set head->next = NULL End Else Set temp=head Loop While temp->next!=NULL Set temp=temp->next End Set newnode->next=NULL Set temp->next=newnode End Step 3 -> Declare a function to display list void display() IF head=NULL Print no node End Else Set temp=head Loop While temp!=NULL Print temp->data Set temp=temp->next End End Step 4 -> declare a function to find alternate nodes void product_nodes() declare int product=1 Set temp=head Loop While temp!=NULL Set product=product * (temp->data) Set temp=temp->next End Print product Step 5 -> in main() Create nodes using struct node* head = NULL; Call function insert(10) to insert a node Call display() to display the list Call product_nodes() to find alternate nodes product Stop
示例
#include<stdio.h> #include<stdlib.h> //structure of a node struct node{ int data; struct node *next; }*head,*temp; //function for inserting nodes into a list void insert(int val){ struct node* newnode = (struct node*)malloc(sizeof(struct node)); newnode->data = val; newnode->next = NULL; if(head == NULL){ head = newnode; temp = head; } else { temp->next=newnode; temp=temp->next; } } //function for displaying a list void display(){ if(head==NULL) printf("no node "); else{ temp=head; while(temp!=NULL){ printf("%d ",temp->data); temp=temp->next; } } } //function for finding product void product_nodes(){ int product=1; temp=head; while(temp!=NULL){ product=product * (temp->data); temp=temp->next; } printf("
product of nodes is : %d" ,product); } int main(){ //creating list struct node* head = NULL; //inserting elements into a list insert(1); insert(2); insert(3); insert(4); insert(5); insert(6); //displaying the list printf("linked list is : "); display(); //calling function for finding prodouct Product_nodes(); return 0; }
输出
linked list is : 1 2 3 4 5 6 product of nodes is : 720
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