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Given a singly linked list, determine if it is a palindrome. Example 1: Input: 1 2 Output: false Example 2: Input: 1 2 2 1 Output: true Follow up: Cou 阅读全文
posted @ 2018-11-30 15:15
bernieloveslife
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Given a non negative index k where k ≤ 33, return the kth index row of the Pascal's triangle. Note that the row index starts from 0. In Pascal's trian 阅读全文
posted @ 2018-11-30 15:15
bernieloveslife
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Given two strings s and t , write a function to determine if t is an anagram of s. Example 1: Input: s = "anagram", t = "nagaram" Output: true Example 阅读全文
posted @ 2018-11-30 15:14
bernieloveslife
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You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take turns to remove 1 to 3 ston 阅读全文
posted @ 2018-11-30 15:14
bernieloveslife
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Consider all the leaves of a binary tree. From left to right order, the values of those leaves form a leaf value sequence. For example, in the given t 阅读全文
posted @ 2018-11-30 15:14
bernieloveslife
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You are given a data structure of employee information, which includes the employee's unique id, his importance value and his direct subordinates' id. 阅读全文
posted @ 2018-11-30 15:14
bernieloveslife
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Given a tree, rearrange the tree in in order so that the leftmost node in the tree is now the root of the tree, and every node has no left child and o 阅读全文
posted @ 2018-11-30 15:14
bernieloveslife
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An array is monotonic if it is either monotone increasing or monotone decreasing. An array A is monotone increasing if for all i = A[j]. Return true i 阅读全文
posted @ 2018-11-30 15:14
bernieloveslife
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Given two binary trees and imagine that when you put one of them to cover the other, some nodes of the two trees are overlapped while the others are n 阅读全文
posted @ 2018-11-30 15:14
bernieloveslife
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We are given two sentences A and B. (A sentence is a string of space separated words. Each word consists only of lowercase letters.) A word is uncommo 阅读全文
posted @ 2018-11-30 15:14
bernieloveslife
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