Given an integer n, count the total number of digit 1 appearing in all non-negative integers less than or equal to n.

For example:
Given n = 13,
Return 6, because digit 1 occurred in the following numbers: 1, 10, 11, 12, 13.

Hint:

    1. Beware of overflow.

大神的解答，讲得很清楚：

对于每一位，都需要考虑3种情况：0，1，2。

http://blog.csdn.net/elton_xiao/article/details/48578387

[Leetcode] Number of Digit Ones的更多相关文章

  1. [LeetCode] Number of Digit One 数字1的个数

    Given an integer n, count the total number of digit 1 appearing in all non-negative integers less th ...

  2. LeetCode Number of Digit One

    原题链接在这里:https://leetcode.com/problems/number-of-digit-one/ 每10个数, 有一个个位是1, 每100个数, 有10个十位是1, 每1000个数 ...

  3. Java for LeetCode 233 Number of Digit One

    Given an integer n, count the total number of digit 1 appearing in all non-negative integers less th ...

  4. (medium)LeetCode 233.Number of Digit One

    Given an integer n, count the total number of digit 1 appearing in all non-negative integers less th ...

  5. 【LeetCode】233. Number of Digit One

    题目: Given an integer n, count the total number of digit 1 appearing in all non-negative integers les ...

  6. LeetCode 233 Number of Digit One 某一范围内的整数包含1的数量

    Given an integer n, count the total number of digit 1 appearing in all non-negative integers less th ...

  7. LeetCode OJ 之 Number of Digit One （数字1的个数）

    题目: Given an integer n, count the total number of digit 1 appearing in all non-negative integers les ...

  8. 233. Number of Digit One

    题目: Given an integer n, count the total number of digit 1 appearing in all non-negative integers les ...

  9. [Swift]LeetCode233. 数字1的个数 | Number of Digit One

    Given an integer n, count the total number of digit 1 appearing in all non-negative integers less th ...

随机推荐

  1. WebClient 实现多文件/文本同时上传

    public class CreateBytes { Encoding encoding = Encoding.UTF8; /**/ /// <summary> /// 拼接所有的二进制数 ...

  2. ur c题练习

    ur的c果然sxbk啊 ur5:“三个莫比乌斯反演掷地有声"——摘自v(c)f(z)k(y)语录,无删改 ur2:有根树分治裸题,复杂度玄学$O(n\sqrt{n})$. 首先,转化为统计k ...

  3. Java学习——连接数据库

    1.去官网下载对应版本的Ojdbc.jar(oracle).sqljdbc.jar(sqlserver). 2.放置到项目lib文件夹下 3.项目右键->Build Path->confi ...

  4. 复习（1）【Maven】

    终于开始复习旧知识了,有输入必然要有输出.输入和输出之间的内化过程尤为重要,在复习的同时,真正把学到的东西积淀下来,加深理解. Maven项目概念与配置 Maven是一个项目管理和综合工具.Maven ...

  5. tomcat 快速部署静态文件

    server.conf配置: <?xml version='1.0' encoding='utf-8'?> <!-- Licensed to the Apache Software ...

  6. spring框架学习（三）

    一.Spring自动组件扫描 Spring 提供组件扫描(component scanning)功能.它能从指定的classpath里自动扫描.侦测和实例化具有特定注解的组件. 基本的注解是@Comp ...

  7. html5——canva 绘图1简单图形

    <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8&quo ...

  8. springmvc+mybatis事务回滚

    spring-mybatis.xml中 配置了 <!-- 拦截器方式配置事物 --> <tx:advice id="transactionAdvice" tran ...

  9. 企业号查询部门id(改版后)

    1.搜索部门,输入"名称" 2.在后面可以查到部门ID

  10. ThinkPHP学习总结

    ThinkPHP学习总结 网站开发使用的thinkPHP5.0在此总结备查 MVC关系功能图 一.Thinkphp开发规范 l 类 类库.函数文件统一以.php为后缀: 类的文件名均以命名空间定义,并 ...