摘要：
Given an unsorted array return whether an increasing subsequence of length 3 exists or not in the array. Formally the function should: Your algorithm 阅读全文
摘要：
A message containing letters from A-Z is being encoded to numbers using the following mapping: Given a non-empty string containing only digits, determ 阅读全文
摘要：
Given a string s and a string t, check if s is subsequence of t. You may assume that there is only lower case English letters in both s and t. t is po 阅读全文
摘要：
终于作为转专业小白的我也开始刷题啦！希望能通过记录分享的形式加深解题思路的理解和记忆。也希望大神们能够指点一二。 列表中的题目名称都是链接，难度和标签也都是也都是链接，方便归类搜索。 Total: 41. 阅读全文
摘要：
Given an array of integers, 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements that appear twi 阅读全文
摘要：
Given an unsorted array of integers, find the length of longest increasing subsequence. Example: Note: There may be more than one LIS combination, it 阅读全文