问题描述: Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1. For example, 123 -> "One Hundred Twenty Three" 12345 -> "Twelve Thousand Three Hundred Forty Five" 12345…

Integer to English Words [LeetCode] https://leetcode.com/problems/integer-to-english-words/ Total Accepted: 3589 Total Submissions: 24432 Difficulty: Medium Question Convert a non-negative integer to its english words representation. Given input is g…

Integer to English Words Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1. For example, 123 -> "One Hundred Twenty Three" 12345 -> "Twelve Thousand Three Hundred For…

题目: 273. Integer to English Words Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1. For example, 123 -> "One Hundred Twenty Three" 12345 -> "Twelve Thousand Three Hu…

Mybatis的CRUD小Demo 为方便查看每次的增删改结果,封装了查询,用来显示数据库的记录: public static void showInfo(){ SqlSession session = getSqlSesion(); String sql = "me.gacl.mapping.userMapper.getUsers"; List<Map<String,String>> users = session.selectList(sql); for(M…

今天页面上突然查询不出数据,大致的sql语句是 select xx ,xxx from table a where a.lrmb in ( 6101060033, 61010503300, 61016666645 ) order by xxx desc 报错信息是"无效数字",很快就发现是lrbm这个字段里面的数字上没有引号,而之前一直是可以查询出数据的,所以很可能是数据库里面有人人工的添加了一条数据,这条数据的lrbm字段的类型有错,待会儿在自己本地 数据库里面测试一条错误哦数据测试…

题目: Follow up for N-Queens problem. Now, instead outputting board configurations, return the total number of distinct solutions. 题解: 这道题跟NQueens的解法完全一样(具体解法参照N QueensN Queens leetcode java),只不过要求的返回值不同了..所以要记录的result稍微改一下就好了... 因为涉及到递归,result传进去引用类型(…

参数 params={"abc":0} JSONObject转换Int类型 JSONObject json = JSONObject.fromObject(params); if (json.containsKey("desgin_review_type")) { value=json.getInt("abc")+""; } } 运行错误写法<java.lang.Integer cannot be cast to jav…

1.在执行代码打印map的value时,提示错误java.lang.Integer cannot be  cast to java.lang.String,这个错误很明显是类型转换错误 查看表字段的数据 解决方案: 1.直接使用tosting的方式 //方法二:Integer类的成员方法toString() String str = entry.value().toString(); 2.使用String类的静态方法valueOf() String str = String.valueOf(en…

1.错误描写叙述 java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String service.impl.ArrivalBillServiceImpl.exportBillExcel(BillServiceImpl.java:266) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.Na…

场景 刚写的scala处理bmp文件的实验, 打了jar包让java调用一下, 结果发生这个错误. package org.tanglizi.bmp.demo; import org.tanglizi.bmp.image.BmpImage; import scala.Tuple3; public class Application { public static void main(String[] args) { BmpImage image = BmpImage.create(200, 10…

原题链接在这里:https://leetcode.com/problems/integer-to-english-words/ Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1. For example, 123 -> "One Hundred Twenty Three" 12345 ->…

Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1. Example 1: Input: 123 Output: "One Hundred Twenty Three" Example 2: Input: 12345 Output: "Twelve Thousand Three Hundred F…

原题链接在这里:https://leetcode.com/problems/integer-to-english-words/description/ 题目: Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1. For example, 123 -> "One Hundred Twenty Three&qu…

Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1. For example, 123 -> "One Hundred Twenty Three" 12345 -> "Twelve Thousand Three Hundred Forty Five" 1234567 -&g…

https://leetcode.com/problems/integer-to-english-words/ Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1. For example, 123 -> "One Hundred Twenty Three" 12345 -> "Tw…

Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1. Example 1: Input: 123Output: "One Hundred Twenty Three"Example 2: Input: 12345Output: "Twelve Thousand Three Hundred Fort…

Reverse digits of an integer. Example1: x = 123, return 321Example2: x = -123, return -321 public class Solution { public int reverse(int x) { if(x==Integer.MIN_VALUE) return 0; long result = 0; int i = 0; int temp = (x>0)?1:0; x = Math.abs(x); while…

题目: Implement atoi to convert a string to an integer. Hint: Carefully consider all possible input cases. If you want a challenge, please do not see below and ask yourself what are the possible input cases. Notes: It is intended for this problem to be…

问题描述: Given an integer, convert it to a roman numeral. Input is guaranteed to be within the range from 1 to 3999. 分析: /** * 将一个Integer数字转换为罗马数字,范围 1-3999 * integer数据与罗马数字之间的对应关系,列举出来,建立一个二维数组 * 1~9: {"I", "II", "III", "I…

问题描述: Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. 算法: /** * 输入一个罗马数字,返回它的整型表示 * @author admin * 转换规则:从右向左或者从左向右遍历均可 * 1 相同数字连写,相加 ;2 小数字在大数字右边,相加;3 小数字在大数字左边,大的减去小的 */ 方法一:hashmap 从右向左遍历…

题目: Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. 题意: 给定一个罗马数字,将其转化为整数. 给定的输入保证在1-3999之间 算法分析: * 罗马数字规则: * 1, 罗马数字共同拥有7个,即I(1).V(5).X(10).L(50).C(100).D(500)和M(1000). * 罗马数字中没有"0". *…

题目: Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1. For example, 123 -> "One Hundred Twenty Three" 12345 -> "Twelve Thousand Three Hundred Forty Five" 1234567…

Given a non-empty string containing an out-of-order English representation of digits 0-9, output the digits in ascending order. Note: Input contains only lowercase English letters. Input is guaranteed to be valid and can be transformed to its origina…

Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1. Example 1: Input: 123 Output: "One Hundred Twenty Three" Example 2: Input: 12345 Output: "Twelve Thousand Three Hundred F…

Reference: http://blog.csdn.net/lbyxiafei/article/details/9375735  题目: Implement int sqrt(int x). Compute and return the square root of x. 题解: 这道题很巧妙的运用了二分查找法的特性,有序,查找pos(在这道题中pos=value),找到返回pos,找不到返回邻近值. 因为是求数x(x>=0) 的平方根, 因此,结果一定是小于等于x且大于等于0,所以用二分查…

Question Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than 231 - 1. For example, 123 -> "One Hundred Twenty Three" 12345 -> "Twelve Thousand Three Hundred Forty Five" 12…

程序猿都非常懒,你懂的! 今天为大家分享的是Integer这个包装类.在现实开发中,我们往往须要操作Integer,或者各种进制的转换等等.我今天就为大家具体解说一下Integer的使用吧.看代码: package com.herman.test; public class IntegerTest { public static void main(String[] args) { System.out.println("Integer中的常量**************************…

这里记录一下自己刷的LeetCode题目. 有些博客用英文阐述自己的思路和收获,相当于练习一下英文的表达能力. 比较好的题目有加粗. 1. Two Sum 3. Longest Substring Without Repeating Characters 5. Longest Palindromic Substring 7. Reverse Integer 9. Palindrome Number 8. String to Integer (atoi) 溢出的处理 21. Merge Two S…

题目: Implement regular expression matching with support for '.' and '*'. '.' Matches any single character. '*' Matches zero or more of the preceding element. The matching should cover the entire input string (not partial). The function prototype shoul…