摘要： 题目描述： Given an array of integers sorted in ascending order, find the starting and ending position of a given target value. Your algorithm's runtime co 阅读全文

摘要： 题目描述： Suppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2). 阅读全文

摘要： 题目描述： Implement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers. If such arrangement is not 阅读全文