Create 求不带头结点的单链表长度.c

链表/求不带头结点的单链表长度.c

@@ -0,0 +1,67 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<stdbool.h>
+
+typedef struct LNode{
+	int data;
+	struct LNode *next;
+}LNode,*LinkList; 
+
+bool InitList(LinkList *L){
+	(*L) = NULL;
+	return true;
+}
+void PrintList(LinkList L){
+	LinkList p = L;
+	while(p){
+		printf("%d\n",p->data);
+		p = p->next;
+	}
+}
+int Length(LinkList L){
+	LNode *p = L;
+	int j = 0;
+	while(p){
+		p = p->next;
+		j++;
+	}
+	return j;
+}
+bool InsertList(LinkList *L,int i,int e){
+	if(i<1){
+		return false;
+	}
+	if(i==1){
+		LNode *s = (LNode*)malloc(sizeof(LNode));
+		s->data = e;
+		s->next = *L;
+		*L = s;
+		return true;
+	}
+	LNode *p;
+	int j = 1;
+	p = *L;
+	while(p&&j<i-1){
+		p = p->next;
+		j++;
+	}
+	if(p==NULL){
+		return false;
+	}
+	LNode *s = (LNode*)malloc(sizeof(LNode));
+	s->data = e;
+	s->next = p->next;
+	p->next = s;
+	return true;
+}
+int main(){
+	LinkList L;
+	InitList(&L);
+	for(int i = 0;i < 10;i ++){
+		InsertList(&L,i+1,i);
+	}
+	PrintList(L);
+	printf("----测试----\n");
+	printf("该链表的长度为%d",Length(L));
+	return 0;
+}