11 2020 档案
摘要:package LeetCode_611 /** * 611. Valid Triangle Number * https://leetcode.com/problems/valid-triangle-number/ * Given an array consists of non-negative
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摘要:package LeetCode_611 /** * 611. Valid Triangle Number * https://leetcode.com/problems/valid-triangle-number/ * Given an array consists of non-negative
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摘要:package LeetCode_1672 /** * 1672. Richest Customer Wealth * https://leetcode.com/problems/richest-customer-wealth/submissions/ * You are given an m x
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摘要:package LeetCode_1664 /** * 1664. Ways to Make a Fair Array * https://leetcode.com/problems/ways-to-make-a-fair-array/ * You are given an integer arra
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摘要:import java.util.concurrent.atomic.AtomicInteger /** * This problem was asked by Microsoft. Implement the singleton pattern with a twist. First, inste
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摘要:package LeetCode_1162 import java.util.* /** * 1162. As Far from Land as Possible * https://leetcode.com/problems/as-far-from-land-as-possible/ * Give
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摘要:package LeetCode_476 /** * 476. Number Complement * https://leetcode.com/problems/number-complement/description/ * Given a positive integer num, outpu
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摘要:package LeetCode_735 import java.util.* /** * 735. Asteroid Collision * https://leetcode.com/problems/asteroid-collision/ * We are given an array aste
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摘要:/** * This problem was asked by Google. Given a set of closed intervals, find the smallest set of numbers that covers all the intervals. If there are
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摘要:package LeetCode_1663 /** * 1663. Smallest String With A Given Numeric Value * https://leetcode.com/problems/smallest-string-with-a-given-numeric-valu
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摘要:package LeetCode_1662 /** * 1662. Check If Two String Arrays are Equivalent * https://leetcode.com/problems/check-if-two-string-arrays-are-equivalent/
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摘要:package LeetCode_733 import java.util.* /** * 733. Flood Fill * https://leetcode.com/problems/flood-fill/ * An image is represented by a 2-D array of
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摘要:package LeetCode_703 import java.util.* /** * 703. Kth Largest Element in a Stream * https://leetcode.com/problems/kth-largest-element-in-a-stream/ *
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摘要:package LeetCode_508 /** * 508. Most Frequent Subtree Sum https://leetcode.com/problems/most-frequent-subtree-sum/ * Given the root of a tree, you are
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摘要:package LeetCode_701 /** * 701. Insert into a Binary Search Tree * https://leetcode.com/problems/insert-into-a-binary-search-tree/ * You are given the
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摘要:package LeetCode_694 import java.util.* import kotlin.collections.HashSet /** * 694. Number of Distinct Islands * (Prime) * Given a non-empty 2D array
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摘要:package LeetCode_1289 /** * 1289. Minimum Falling Path Sum II * https://leetcode.com/problems/minimum-falling-path-sum-ii/ * Given a square grid of in
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摘要:package LeetCode_931 /** * 931. Minimum Falling Path Sum * https://leetcode.com/problems/minimum-falling-path-sum/ * * Given a square array of integer
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摘要:package LeetCode_688 /** * 688. Knight Probability in Chessboard * https://leetcode.com/problems/knight-probability-in-chessboard/ * * On an NxN chess
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摘要:package LeetCode_827 import java.util.* import kotlin.collections.HashMap /** * 827. Making A Large Island * https://leetcode.com/problems/making-a-la
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摘要:package LeetCode_283 /** * 283. Move Zeroes * https://leetcode.com/problems/move-zeroes/description/ * * Given an array nums, * write a function to mo
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摘要:package LeetCode_234 /** * 234. Palindrome Linked List * https://leetcode.com/problems/palindrome-linked-list/ * * Given a singly linked list, determi
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摘要:package LeetCode_1342 /** * 1342. Number of Steps to Reduce a Number to Zero * https://leetcode.com/problems/number-of-steps-to-reduce-a-number-to-zer
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摘要:package LeetCode_1658 /** * 1658. Minimum Operations to Reduce X to Zero * https://leetcode.com/problems/minimum-operations-to-reduce-x-to-zero/ * You
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摘要:package LeetCode_1657 /** * 1657. Determine if Two Strings Are Close * https://leetcode.com/problems/determine-if-two-strings-are-close/ * * Two strin
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摘要:package LeetCode_1656 /** * 1656. Design an Ordered Stream * https://leetcode.com/problems/design-an-ordered-stream/ * There are n (id, value) pairs,
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摘要:package LeetCode_695 import java.util.* /** * 695. Max Area of Island * * Given a non-empty 2D array grid of 0's and 1's, * an island is a group of 1'
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摘要:package LeetCode_695 import java.util.* /** * 695. Max Area of Island * * Given a non-empty 2D array grid of 0's and 1's, * an island is a group of 1'
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摘要:import java.util.* /** This problem was asked by Quora. Given an absolute pathname that may have . or .. as part of it, return the shortest standardiz
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摘要:package LeetCode_939 /** * 939. Minimum Area Rectangle * https://leetcode.com/problems/minimum-area-rectangle/ * * Given a set of points in the xy-pla
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摘要:package LeetCode_259 /** * 259. 3Sum Smaller * (Prime) * Given an array of n integers nums and a target, * find the number of index triplets i, j, k w
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摘要:package LeetCode_29 /** * 29. Divide Two Integers * https://leetcode.com/problems/divide-two-integers/ * * Given two integers dividend and divisor, di
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摘要:package LeetCode_16 /** * 16. 3Sum Closest * https://leetcode.com/problems/3sum-closest/ * * Given an array nums of n integers and an integer target,
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摘要:package LeetCode_15 /** * 15. 3Sum * https://leetcode.com/problems/3sum/ * * Given an array nums of n integers, are there elements a, b, c in nums suc
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摘要:package LeetCode_1302 import java.util.* /** * 1302. Deepest Leaves Sum * https://leetcode.com/problems/deepest-leaves-sum/ * Given a binary tree, ret
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摘要:package LeetCode_1315 import java.util.* /** * 1315. Sum of Nodes with Even-Valued Grandparent * https://leetcode.com/problems/sum-of-nodes-with-even-
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摘要:package LeetCode_679 /** * 679. 24 Game * https://leetcode.com/problems/24-game/ * * You have 4 cards each containing a number from 1 to 9. * You need
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摘要:package LeetCode_8 /** * 8. String to Integer (atoi) * https://leetcode.com/problems/string-to-integer-atoi/ * * Implement atoi which converts a strin
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摘要:package LeetCode_1649 /** * 1649. Create Sorted Array through Instructions * https://leetcode.com/problems/create-sorted-array-through-instructions/ *
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摘要:package LeetCode_1331 import java.util.* import kotlin.collections.HashMap /** * 1331. Rank Transform of an Array * https://leetcode.com/problems/rank
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摘要:package LeetCode_1646 /** * 1646. Get Maximum in Generated Array * https://leetcode.com/problems/get-maximum-in-generated-array/ * * You are given an
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摘要:package LeetCode_1647 import java.util.* import kotlin.collections.HashMap /** * 1647. Minimum Deletions to Make Character Frequencies Unique * https:
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摘要:package LeetCode_670 /** * 670. Maximum Swap * https://leetcode.com/problems/maximum-swap/description/ * * Given a non-negative integer, you could swa
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摘要:package LeetCode_662 import java.util.* import kotlin.collections.ArrayList /** * 662. Maximum Width of Binary Tree * https://leetcode.com/problems/ma
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摘要:package LeetCode_170 import java.util.* /** * 170. Two Sum III - Data structure design * (Prime) * Design and implement a TwoSum class. It should supp
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摘要:package LeetCode_653 /** * 653. Two Sum IV - Input is a BST * https://leetcode.com/problems/two-sum-iv-input-is-a-bst/ * * Given the root of a Binary
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摘要:package LeetCode_647 /** * 647. Palindromic Substrings * https://leetcode.com/problems/palindromic-substrings/ * Given a string, your task is to count
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摘要:package LeetCode_642 import java.util.* import kotlin.collections.ArrayList import kotlin.collections.HashMap /** * 642. Design Search Autocomplete Sy
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摘要:package LeetCode_319 /** * 319. Bulb Switcher * https://leetcode.com/problems/bulb-switcher/ * * There are n bulbs that are initially off. You first t
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摘要:package LeetCode_1332 /** * 1332. Remove Palindromic Subsequences * https://leetcode.com/problems/remove-palindromic-subsequences/ * * Given a string
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摘要:package LeetCode_1460 /** * 1460. Make Two Arrays Equal by Reversing Sub-arrays * https://leetcode.com/problems/make-two-arrays-equal-by-reversing-sub
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摘要:package LeetCode_593 /** * 593. Valid Square * https://leetcode.com/problems/valid-square/ * * Given the coordinates of four points in 2D space, retur
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摘要:package LeetCode_572 import java.util.* /** * 572. Subtree of Another Tree * https://leetcode.com/problems/subtree-of-another-tree/ * * Given two non-
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摘要:package LeetCode_525 /** * 525. Contiguous Array * https://leetcode.com/problems/contiguous-array/description/ * * Given a binary array, find the maxi
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摘要:package LeetCode_1358 /** * 1358. Number of Substrings Containing All Three Characters * https://leetcode.com/problems/number-of-substrings-containing
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摘要:package LeetCode_1392 /** * 1392. Longest Happy Prefix * https://leetcode.com/problems/longest-happy-prefix/ * * A string is called a happy prefix if
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摘要:package LeetCode_872 import java.util.* /** * 872. Leaf-Similar Trees * https://leetcode.com/problems/leaf-similar-trees/ * * Consider all the leaves
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摘要:package LeetCode_554 /** * 554. Brick Wall * https://leetcode.com/problems/brick-wall/ * * There is a brick wall in front of you. * The wall is rectan
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摘要:package LeetCode_249 /** * 249. Group Shifted Strings * (Prime) * Given a string, we can "shift" each of its letter to its successive letter, for exam
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摘要:package LeetCode_154 /** * 154. Find Minimum in Rotated Sorted Array II * https://leetcode.com/problems/find-minimum-in-rotated-sorted-array-ii/ * * S
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摘要:package LeetCode_1640 import java.util.* /** * 1640. Check Array Formation Through Concatenation * https://leetcode.com/problems/check-array-formation
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摘要:package LeetCode_1641 /** * 1641. Count Sorted Vowel Strings * https://leetcode.com/problems/count-sorted-vowel-strings/ * * Given an integer n, retur
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