喜刷刷

Word Ladder I Given two words ( start  and  end ), and a dictionary, find the length of shortest transformation sequence from  start  to ...

Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following two linked list...

Given an unsorted integer array, find the first missing positive integer. For example, Given  [1,2,0]  return  3 , and  [3,4,-1,1]  ret...

Given an absolute path for a file (Unix-style), simplify it. For example, path  =  "/home/" , =>  "/home" path  ...

Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations:  get  and  set . g...

Given a collection of intervals, merge all overlapping intervals. For example, Given  [1,3],[2,6],[8,10],[15,18] , return  [1,6],[8,10]...

Given a set of  non-overlapping  intervals, insert a new interval into the intervals (merge if necessary). You may assume that the interv...