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Singly Linked list deletion
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data_structures/linked_list/singly_link_list_deletion.c
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67
data_structures/linked_list/singly_link_list_deletion.c
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/*Includes structure for a node which can be use to make new nodes of the Linked List.
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It is assumed that the data in nodes will be an integer, though
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function can be modified according to the data type, easily.
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deleteNode deletes a node when passed with a key of the node.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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struct Node
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{
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int data;
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struct Node *next;
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};
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void push(struct Node** head_ref, int new_data)
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{
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struct Node* new_node = (struct Node*) malloc(sizeof(struct Node));
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new_node->data = new_data;
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new_node->next = (*head_ref);
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(*head_ref) = new_node;
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}
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void deleteNode(struct Node **head_ref, int key)
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{
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struct Node* temp = *head_ref, *prev;
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if (temp != NULL && temp->data == key)
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{
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*head_ref = temp->next;
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free(temp);
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return;
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}
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while (temp != NULL && temp->data != key)
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{
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prev = temp;
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temp = temp->next;
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}
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if (temp == NULL) return;
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prev->next = temp->next;
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free(temp);
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}
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void printList(struct Node *node)
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{
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while (node != NULL)
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{
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printf(" %d ", node->data);
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node = node->next;
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}
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}
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int main()
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{
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/* new node can be created here as :-
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struct Node* head = NULL;
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push(&head, data);
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and a node can be delete by using
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deleteNode(&head, key);
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*/
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return 0;
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}
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