[leetcode]4Sum
摘要：
4SumGiven an arraySofnintegers, are there elementsa,b,c, anddinSsuch thata+b+c+d= target? Find all unique quadruplets in the array which gives the sum... 阅读全文
[leetcode]3Sum Closest
摘要：
3Sum ClosestGiven an arraySofnintegers, find three integers inSsuch that the sum is closest to a given number, target. Return the sum of the three int... 阅读全文
[leetcode]3Sum
摘要：
3SumGiven an arraySofnintegers, are there elementsa,b,cinSsuch thata+b+c= 0? Find all unique triplets in the array which gives the sum of zero.Note:El... 阅读全文
[leetcode]Two Sum
摘要：
Two SumGiven an array of integers, find two numbers such that they add up to a specific target number.The function twoSum should return indices of the... 阅读全文