Veritas des Liberty

摘要： Give a string s, count the number of non-empty (contiguous) substrings that have the same number of 0's and 1's, and all the 0's and all the 1's in th 阅读全文

摘要： Given a string representing a code snippet, you need to implement a tag validator to parse the code and return whether it is valid. A code snippet is 阅读全文

摘要： Given two words word1 and word2, find the minimum number of steps required to make word1 and word2 the same, where in each step you can delete one cha 阅读全文

摘要： Given an integer n, find the closest integer (not including itself), which is a palindrome. The 'closest' is defined as absolute difference minimized 阅读全文

摘要： Given a positive 32-bit integer n, you need to find the smallest 32-bit integer which has exactly the same digits existing in the integer n and is gre 阅读全文

摘要： 1030. Matrix Cells in Distance Order We are given a matrix with R rows and C columns has cells with integer coordinates (r, c), where 0 <= r < R and 0 阅读全文

摘要： Given a list of positive integers, the adjacent integers will perform the float division. For example, [2,3,4] -> 2 / 3 / 4. However, you can add any 阅读全文

摘要： 1. Absence to love is what wind is to fire. It extinguishes the small; It inflames the great. 2. It is a truth universally acknowledged that a single 阅读全文

摘要： Given a list of strings, you need to find the longest uncommon subsequence among them. The longest uncommon subsequence is defined as the longest subs 阅读全文

摘要： Given a nested list of integers represented as a string, implement a parser to deserialize it. Each element is either an integer, or a list -- whose e 阅读全文