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全部文章 / 题解（共11篇）

题解 | #把字符串转换成整数#Java递归

/* public class TreeNode { int val = 0; TreeNode left = null; TreeNode right = null; public TreeNode(int val) { this.val = va...

Java

2021-09-15

0 504

题解 | #和为S的连续正数序列#Java高斯加法公式

import java.util.ArrayList; public class Solution { public ArrayList<ArrayList<Integer> > FindContinuousSequence(int sum) { Ar...

2021-09-06

0 429

题解 | #第一个只出现一次的字符#Java数组

public class Solution { public int FirstNotRepeatingChar(String str) { int[] vis = new int[252]; for(int i = 0; i < str.length(...

2021-09-05

0 329

题解 | #把数组排成最小的数#Java不使用字符串比较

import java.util.*; public class Solution { public String PrintMinNumber(int [] numbers) { String[] str = new String[numbers.length]; ...

2021-09-05

0 426

题解 | #树的子结构#Java递归

/** public class TreeNode { int val = 0; TreeNode left = null; TreeNode right = null; public TreeNode(int val) { this.val = v...

2021-09-03

0 422

题解 | #合并区间#Java 97% 用栈中转好理解

import java.util.*; /** * Definition for an interval. * public class Interval { * int start; * int end; * Interval() { start = 0; end...

2021-08-11

0 462

题解 | #二叉树根节点到叶子节点和为指定值的路径#Java91%

import java.util.*; /* * public class TreeNode { * int val = 0; * TreeNode left = null; * TreeNode right = null; * } */ public class Sol...

2021-08-09

0 418

题解 | #单链表的排序# java归并排序

import java.util.*; public class Solution { public ListNode sortInList (ListNode head) { // write code here if(head == null || h...

2021-08-05

0 420

题解 | #字符串的排列# Java回溯法

Java import java.util.ArrayList; import java.lang.StringBuilder; public class Solution { ArrayList<String> res ; int[] vis ; public ...

2021-08-02

0 452

题解 | #合并k个已排序的链表#

Java 超过98% /** * Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode(int x) { * ...

2021-08-02

0 385