题解 | #删除有序链表中重复的元素-I#

/*
 * function ListNode(x){
 *   this.val = x;
 *   this.next = null;
 * }
 */
/**
 * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
 *
 * 
 * @param head ListNode类 
 * @return ListNode类
 */
function deleteDuplicates( head ) {
    // write code here
    if(head === null) return null
    let cur = head
    while(cur && cur.next) {
        let next = cur.next
        if(cur.val === next.val) {
            cur.next = next.next
        }
        else {
            cur = cur.next
        }
        
    }
    return head
}
module.exports = {
    deleteDuplicates : deleteDuplicates
};