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相关问题1. Two Sum 15. 3Sum 16. 3Sum Closest 18. 4Sum 454. 4Sum IIDiscription Given four lists A, B, C, D of integer values, compute how many tuples (i, j, k, l) there are such that A[i] + B[j] + C[k]

Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one solution, and you may not us

相关问题Discription Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity.思路最小堆 该题为二路归并的变种，多路归并。使用最小堆结构在log(k)\log(k)时间复杂度内找到当前最小元素。时间复杂度：nlog(k)n\log(k) 空间复杂度

相关问题24. Swap Nodes in Pairs 25. Reverse Nodes in k-GroupDiscription Given a linked list, reverse the nodes of a linked list k at a time and return its modified list.k is a positive integer and is less