摘要：Given an array of size n, find the majority element. The majority element is the element that appears more than ⌊ n/2 ⌋ times. Given an array of size  阅读全文

摘要：Given a linked list, determine if it has a cycle in it. Given a linked list, determine if it has a cycle in it. Follow up:Can you solve it without usi 阅读全文

摘要：Given a string s and a string t, check if s is subsequence of t. Given a string s and a string t, check if s is subsequence of t. You may assume that 阅读全文