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Problem:Given a non-empty binary search tree and a target value, find the value in the BST that is closest to the target.Note:Given target value is a ... 阅读全文
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Problem:Given a string, find the length of the longest substring T that contains at most 2 distinct characters.For example, Given s =“eceba”,T is "ece... 阅读全文
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Problem:A strobogrammatic number is a number that looks the same when rotated 180 degrees (looked at upside down).Write a function to determine if a n... 阅读全文
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Problem:Given a sorted integer array where the range of elements are [lower,upper] inclusive, return its missing ranges.For example, given[0, 1, 3, 50... 阅读全文
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Problem:Given a string, determine if a permutation of the string could form a palindrome.For example,"code"-> False,"aab"-> True,"carerac"-> True.Gene... 阅读全文
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Problem:There is a fence with n posts, each post can be painted with one of the k colors.You have to paint all the posts such that no more than two ad... 阅读全文
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Problem:Implementint sqrt(int x).Compute and return the square root ofx.Conclusion for Binary Search Problem:Binary search is such an elegant way of s... 阅读全文
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Problem:Given an array of strings, group anagrams together.For example, given:["eat", "tea", "tan", "ate", "nat", "bat"],Return:[ ["ate", "eat","tea"... 阅读全文
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Problem:Given a set ofnon-overlappingintervals, insert a new interval into the intervals (merge if necessary).You may assume that the intervals were i... 阅读全文
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Problem:Given a stringsconsists of upper/lower-case alphabets and empty space characters' ', return the length of last word in the string.If the last ... 阅读全文