04 2019 档案
摘要：Given an array of n positive integers and a positive integer s, find the minimal length of a subarray of which the sum ≥ s. If there isn't one, return
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摘要：Input: [0,1,2,4,5,7] Output: ["0->2","4->5","7"] Explanation: 0,1,2 form a continuous range; 4,5 form a continuous range. class Solution { public List
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摘要：A peak element is an element that is greater than its neighbors. Given an input array where num[i] ≠ num[i+1], find a peak element and return its inde
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摘要：Given a non-empty string s, you may delete at most one character. Judge whether you can make it a palindrome. Example 1: Example 2: Note: class Soluti
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摘要：Given two strings A and B, find the minimum number of times A has to be repeated such that B is a substring of it. If no such solution, return -1. For
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摘要：nitially, there is a Robot at position (0, 0). Given a sequence of its moves, judge if this robot makes a circle, which means it moves back tothe orig
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摘要：Given a string, you need to reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order. E
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摘要：Given a string and an integer k, you need to reverse the first k characters for every 2k characters counting from the start of the string. If there ar
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摘要：Given a word, you need to judge whether the usage of capitals in it is right or not. We define the usage of capitals in a word to be right when one of
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摘要：Given a non-empty string check if it can be constructed by taking a substring of it and appending multiple copies of the substring together. You may a
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摘要：Given an arbitrary ransom note string and another string containing letters from all the magazines, write a function that will return true if the rans
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摘要：Write a function that takes a string as input and reverse only the vowels of a string. Example 1:Given s = "hello", return "holle". Example 2:Given s
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摘要：Write a function that takes a string as input and returns the string reversed. Example:Given s = "hello", return "olleh". Write a function that takes
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摘要：Given two binary strings, return their sum (also a binary string). For example,a = "11"b = "1"Return "100". 和415的解法一样 class Solution { public String a
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摘要：Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example,"A man, a plan, a canal: Pan
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摘要：Write a function to find the longest common prefix string amongst an array of strings. class Solution { public String longestCommonPrefix(String[] str
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摘要：Given a string s and a non-empty string p, find all the start indices of p's anagrams in s. Strings consists of lowercase English letters only and the
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摘要：The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font
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摘要：Input: version1 = "0.1", version2 = "1.1" Output: -1 Input: version1 = "7.5.2.4", version2 = "7.5.3" Output: -1 public int compareVersion(String versi
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摘要：Given a singly linked list, determine if it is a palindrome. public class Solution { public boolean isPalindrome(ListNode head) { ListNode fast = head
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摘要：Write a function to delete a node (except the tail) in a singly linked list, given only access to that node. Supposed the linked list is 1 -> 2 -> 3 -
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摘要：ExampleGiven: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, val = 6Return: 1 --> 2 --> 3 --> 4 --> 5 ExampleGiven: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, val
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摘要：看剑指offer
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摘要：Given a linked list, determine if it has a cycle in it. Follow up:Can you solve it without using extra space? public class Solution { public boolean h
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摘要：Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lists. public c
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摘要：Given a sorted linked list, delete all duplicates such that each element appear only once. For example,Given 1->1->2, return 1->2.Given 1->1->2->3->3,
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摘要：* Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode(int x) { val = x; } * }
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摘要：You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contai
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摘要：Given a linked list, remove the nth node from the end of list and return its head. For example, Note:Given n will always be valid.Try to do this in on
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摘要：Given a linked list, swap every two adjacent nodes and return its head. For example,Given 1->2->3->4, you should return the list as 2->1->4->3. Your a
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摘要：Reverse a linked list from position m to n. Do it in-place and in one-pass. For example:Given 1->2->3->4->5->NULL, m = 2 and n = 4, return 1->4->3->2-
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摘要：Given a list, rotate the list to the right by k places, where k is non-negative. Example: class Solution { public ListNode rotateRight(ListNode head,
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摘要：Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. //剑指offer删除链表中重复的结点 Fo
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摘要：Given a linked list and a value x, partition it such that all nodes less than x come before nodes greater than or equal tox. You should preserve the o
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摘要：Sort a linked list in O(n log n) time using constant space complexity. //利用归并排序的思想 class Solution { public ListNode sortList(ListNode head) { if (head
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摘要：Given a singly linked list L: L0→L1→…→Ln-1→Ln,reorder it to: L0→Ln→L1→Ln-1→L2→Ln-2→… You must do this in-place without altering the nodes' values. For
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摘要：Sort a linked list using insertion sort. public class Solution { public ListNode insertionSortList(ListNode head) { ListNode root = new ListNode(0); /
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摘要：Given a linked list, return the node where the cycle begins. If there is no cycle, return null. Note: Do not modify the linked list. Follow up:Can you
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