题目描述：
LeetCode 371. Sum of Two Integers
Calculate the sum of two integers a and b, but you are not allowed to use the operator + and -.
Example:
Given a = 1 and b = 2, return 3.
归档 2016年6月
[LeetCode]Sum of Two Integers
[LeetCode]Largest Divisible Subset
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LeetCode.
题目描述：
LeetCode 368. Largest Divisible Subset
Given a set of distinct positive integers, find the largest subset such that every pair (Si, Sj) of elements in this subset satisfies: Si % Sj = 0 ...
[LeetCode]Valid Perfect Square
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题目描述：
LeetCode 367. Valid Perfect Square
Given a positive integer num, write a function which returns True if num is a perfect square else False.
Note: Do not use any built-in library function such as sqrt.
Example 1: ...
[LeetCode]Water and Jug Problem
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题目描述：
LeetCode 365. Water and Jug Problem
You are given two jugs with capacities x and y litres. There is an infinite amount of water supply available. You need to determine whether it is possible to measure exactly z litres ...
[LeetCode]Max Sum of Rectangle No Larger Than K
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题目描述：
LeetCode 363. Max Sum of Rectangle No Larger Than K
Given a non-empty 2D matrix matrix and an integer k, find the max sum of a rectangle in the matrix such that its sum is no larger than ...