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题解 | #链表内指定区间反转#

import java.util.*; /* * public class ListNode { * int val; * ListNode next = null; * } */ pub...

Java

2021-11-29

1 532

题解 | #按之字形顺序打印二叉树#

import java.util.ArrayList; /* public class TreeNode { int val = 0; TreeNode left = null; Tr...

Java

2021-11-27

1 397

题解 | #重排链表#

/** Definition for singly-linked list. class ListNode { int val; ListNode next; ListNode(int x) { val = x; next = null; }...

Java

2021-11-27

0 424

题解 | #判断字符是否唯一#

import java.util.*; public class Solution { Map<Character,Character> map=new HashMap<>(); public boolean isUnique (String str) { for(int i...

Java

2021-11-26

0 542

题解 | #移动 0#

import java.util.*; public class Solution { public static int[] moveZeroes (int[] nums) { List list=new ArrayList<>(); for (int i = 0; i < nu...

Java

2021-11-26

0 554

题解 | #跳跃游戏(一)#

import java.util.*; public class Solution { public static boolean canJump(int[] nums) { int res=0; for (int i = 0; i < nums.length; i++) { if(i>...

Java

2021-11-26

0 537

题解 | #二叉树的直径#

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

Java

2021-11-26

1 511

题解 | #二叉树的前序遍历#

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

Java

2021-11-26

14 2419

题解 | #整数反转#

import java.util.*; public class Solution { public int reverse (int num) { String str = String.valueOf(num); if(str.length()>9) return 0; StringBui...

Java

2021-11-26

1 369

题解 | #压缩字符串(一)#

import java.util.*; public class Solution { public String compressString (String param) { if(param.length()==0) return ""; StringBuilder sb=new String...

Java

2021-11-26

0 530