ZeeshanAli-0704Given the head of a sorted linked list, delete all duplicates such that each element appears only once. Return the linked list sorted as well.
Example 1:
Input: head = [1,1,2]
Output: [1,2]
Approach 1
pntr1 & pntr2 is only for understanding purpose
var deleteDuplicates = function(head) {
let pntr1 = head;
while (pntr1 && pntr1.next) {
let one = pntr1;
let two = pntr1.next;
if (one.val === two.val) {
pntr1.next = pntr1.next.next;
} else {
pntr1 = pntr1.next;
}
}
return head;
};
