摘要：
This is a follow up of Shortest Word Distance. The only difference is now you are given the list of words and your method will be called repeatedly ma 阅读全文
摘要：
Given a list of words and two words word1 and word2, return the shortest distance between these two words in the list. For example,Assume that words = 阅读全文
摘要：
Given a nested list of integers, return the sum of all integers in the list weighted by their depth. Each element is either an integer, or a list -- w 阅读全文
摘要：
Given a nested list of integers, return the sum of all integers in the list weighted by their depth. Each element is either an integer, or a list -- w 阅读全文
摘要：
Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum. For example:Given the below binary tree and sum 阅读全文
摘要：
There are a row of n houses, each house can be painted with one of the k colors. The cost of painting each house with a certain color is different. Yo 阅读全文
摘要：
There are a row of n houses, each house can be painted with one of the three colors: red, blue or green. The cost of painting each house with a certai 阅读全文
摘要：
Given an array of n integers where n > 1, nums, return an array output such that output[i] is equal to the product of all the elements of nums except 阅读全文
摘要：
Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in s can be replaced to get t. All occurrenc 阅读全文
摘要：
You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, the only constraint stopping yo 阅读全文