摘要:
Given a string, your task is to count how many palindromic substrings in this string. The substrings with different start indexes or end indexes are c 阅读全文
摘要:
Suppose you have a random list of people standing in a queue. Each person is described by a pair of integers (h, k), where h is the height of the pers 阅读全文
摘要:
题目先粘一下: In a 2 dimensional array grid, each value grid[i][j] represents the height of a building located there. We are allowed to increase the height 阅读全文