Reverse a singly linked list
Source
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#include <stdio.h>typedef struct Node {
char data;
struct Node* next;
} Node;void print_list(Node* root) {
while (root) {
printf("%c ", root->data);
root = root->next;
}
printf("\n");
}Node* reverse(Node* root) { Node* new_root = 0;
while (root) {
Node* next = root->next;
root->next = new_root;
new_root = root;
root = next;
}
return new_root;
}int main() {
Node d = { 'd', 0 };
Node c = { 'c', &d };
Node b = { 'b', &c };
Node a = { 'a', &b };
Node* root = &a;
print_list(root);
root = reverse(root);
print_list(root);
return 0;
} |