yanglq的博客

Given two arrays of length m and n with digits 0-9 representing two numbers. Create the maximum number of length k from digits of the two. The relative order of the digits from the same array must

There are N gas stations along a circular route, where the amount of gas at station i is gas[i]. You have a car with an unlimited gas tank and it costs cost[i] of gas to travel from station i to

You are given a list of non-negative integers, a1, a2, ..., an, and a target, S. Now you have 2 symbols + and -. For each integer, you should choose one from + and - as its new symbol. Find out