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原题链接在这里：https://leetcode.com/problems/valid-word-abbreviation/ 题目： Given a non-empty string s and an abbreviation abbr, return whether the string matc
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posted @ 2017-04-11 01:54
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/k-diff-pairs-in-an-array/ 题目： Given an array of integers and an integer k, you need to find the number of unique
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posted @ 2017-04-08 07:12
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/minimum-absolute-difference-in-bst/ 题目： Given a binary search tree with non-negative values, find the minimum ab
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posted @ 2017-04-07 08:32
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/third-maximum-number/ 题目： Given a non-empty array of integers, return the third maximum number in this array. If
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posted @ 2017-04-06 06:57
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/heaters/#/description 题目： Winter is coming! Your first job during the contest is to design a standard heater wit
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posted @ 2017-04-01 10:12
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/perfect-number/#/description 题目： We define the Perfect Number is a positive integer that is equal to the sum of
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posted @ 2017-04-01 09:27
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/reverse-string-ii/#/description 题目： Given a string and an integer k, you need to reverse the first k characters
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posted @ 2017-04-01 07:44
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/detect-capital/#/description 题目： Given a word, you need to judge whether the usage of capitals in it is right or
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posted @ 2017-04-01 06:12
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/nth-digit/ 题目： Find the nth digit of the infinite integer sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, ... Note:n
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posted @ 2017-04-01 01:59
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/relative-ranks/#/description 题目： Given scores of N athletes, find their relative ranks and the people with the t
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posted @ 2017-03-31 07:50
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/base-7/#/description 题目： Given an integer, return its base 7 string representation. Example 1: Example 2: Note:
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posted @ 2017-03-30 08:16
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/next-greater-element-ii/ 题目： Given a circular array (the next element of the last element is the first element o
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posted @ 2017-03-29 08:03
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/next-greater-element-i/description/ 题目： You are given two arrays (without duplicates) nums1 and nums2 where nums
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posted @ 2017-03-29 07:43
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/keyboard-row/#/description 题目： Given a List of words, return the words that can be typed using letters of alphab
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posted @ 2017-03-29 05:58
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/validate-ip-address/#/description 题目： Write a function to check whether an input string is a valid IPv4 address
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posted @ 2017-03-22 08:58
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/132-pattern/ 题目： Given a sequence of n integers a1, a2, ..., an, a 132 pattern is a subsequence ai, aj, ak such
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posted @ 2017-03-21 08:31
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/4sum-ii/?tab=Description 题目： Given four lists A, B, C, D of integer values, compute how many tuples (i, j, k, l)
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posted @ 2017-03-09 15:18
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/longest-palindromic-subsequence/ 题目： Given a string s, find the longest palindromic subsequence's length in s. Y
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posted @ 2017-03-03 14:59
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/all-oone-data-structure/?tab=Description 题目： Implement a data structure supporting the following operations: Cha
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posted @ 2017-03-02 16:31
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/delete-node-in-a-bst/?tab=Description 题目： Given a root node reference of a BST and a key, delete the node with t
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posted @ 2017-03-01 15:29
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/lfu-cache/ 题目： Design and implement a data structure for Least Frequently Used (LFU) cache. It should support th
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posted @ 2017-02-27 16:42
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/flatten-nested-list-iterator/ 题目： Given a nested list of integers, implement an iterator to flatten it. Each ele
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posted @ 2017-02-25 03:46
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/insert-delete-getrandom-o1-duplicates-allowed/ 题目： RandomizedCollection is a data structure that contains a coll
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posted @ 2017-02-24 19:09
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/insert-delete-getrandom-o1/?tab=Description 题目： Design a data structure that supports all following operations i
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posted @ 2017-02-24 18:26
Dylan_Java_NYC
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原题链接在这里：http://www.lintcode.com/en/problem/coins-in-a-line-iii/ 题目： There are n coins in a line. Two players take turns to take a coin from one of the
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posted @ 2017-02-17 16:14
Dylan_Java_NYC
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原题链接在这里：http://www.lintcode.com/en/problem/coins-in-a-line-ii/ 题目： There are n coins with different value in a line. Two players take turns to take on
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posted @ 2017-02-16 18:00
Dylan_Java_NYC
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原题链接在这里：http://www.lintcode.com/en/problem/coins-in-a-line/ 题目： There are n coins in a line. Two players take turns to take one or two coins from righ
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posted @ 2017-02-16 17:53
Dylan_Java_NYC
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原题链接在这里：http://www.lintcode.com/en/problem/maximum-subarray-ii/ 题目： Given an array of integers, find two non-overlapping subarrays which have the larg
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posted @ 2017-02-16 16:02
Dylan_Java_NYC
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原题链接在这里：http://www.lintcode.com/en/problem/longest-increasing-continuous-subsequence-ii/ 题目： Give you an integer matrix (with row size n, column size
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posted @ 2017-02-16 13:08
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/longest-increasing-subsequence/ 题目： Given an unsorted array of integers, find the length of longest increasing s
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posted @ 2017-02-16 11:49
Dylan_Java_NYC
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原题链接在这里：http://www.lintcode.com/en/problem/longest-increasing-continuous-subsequence/ 题目： Give an integer array，find the longest increasing continuous
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posted @ 2017-02-16 11:32
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/longest-substring-with-at-most-k-distinct-characters/ 题目： Given a string, find the length of the longest substri
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posted @ 2017-02-10 09:10
Dylan_Java_NYC
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原题链接在这里：http://www.lintcode.com/zh-cn/problem/sliding-window-matrix-maximum/ 题目： Given an array of n * m matrix, and a moving matrix window (size k *
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posted @ 2017-02-09 15:38
Dylan_Java_NYC
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原题链接在这里：http://www.lintcode.com/en/problem/heapify/ 题目： Given an integer array, heapify it into a min-heap array. For a heap array A, A[0] is the root
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posted @ 2017-02-09 05:49
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/sliding-window-median/?tab=Description 题目： Median is the middle value in an ordered integer list. If the size of
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posted @ 2017-02-08 16:00
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/trapping-rain-water-ii/?tab=Description 题目： Given an m x n matrix of positive integers representing the height o
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posted @ 2017-02-08 14:18
Dylan_Java_NYC
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原题链接在这里：http://www.lintcode.com/en/problem/find-the-weak-connected-component-in-the-directed-graph/ 题目： Find the number Weak Connected Component in th
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posted @ 2017-02-04 12:06
Dylan_Java_NYC
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原题链接在这里：http://www.lintcode.com/en/problem/triangle-count/# 题目： Given an array of integers, how many three numbers can be found in the array, so that
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posted @ 2017-02-03 14:27
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/sort-characters-by-frequency/ 题目： Given a string, sort it in decreasing order based on the frequency of characte
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posted @ 2017-02-03 09:07
Dylan_Java_NYC
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原题链接在这里：https://leetcode.com/problems/top-k-frequent-elements/ 题目： Given a non-empty array of integers, return the k most frequent elements. For examp
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posted @ 2017-02-03 08:51
Dylan_Java_NYC
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