Leetcode题解(8):L179/Largest Number
来源:互联网 发布:暴风影音mac版能在线么 编辑:程序博客网 时间:2024/09/21 08:55
L179:Largest Number
Given a list of non negative integers, arrange them such that they form the largest number.
For example, given [3, 30, 34, 5, 9], the largest formed number is 9534330.
Note: The result may be very large, so you need to return a string instead of an integer.
解题思路:
其实可以分解为两个数字的比较排序
对于两个备选数字a和b,如果int(str(a) + str(b)) > int(str(b) + str(a)),则a在b之前,否则b在a之前
按此对其从大到小排序即可
class Solution {public: //long(str(a) + str(b)) > long(str(b) + str(a)),则a在b之前 static bool cmpStr(string &a, string &b) { string ab = a + b; string ba = b + a; return stol(ab) > stol(ba); } string largestNumber(vector<int>& nums) { int numsLen = nums.size(); if (numsLen < 1) return ""; if (numsLen == 1) return to_string(nums[0]); //转化为字符串数组,方便处理 vector<string> strVec; for (int i = 0; i < numsLen; i++) { strVec.push_back(to_string(nums[i])); } //字符串排序 sort(strVec.begin(), strVec.end(), cmpStr); //去掉开头的0 int i = 0; while (i < numsLen && strVec[i] == "0") i++; if (i == numsLen) return "0"; //字符串拼接 string rt = ""; while(i < numsLen) rt += strVec[i++]; return rt; }};
0 0
- Leetcode题解(8):L179/Largest Number
- LeetCode 题解(134): Largest Number
- LeetCode题解(Week2):179. Largest Number
- Largest Number @leetCode
- LeetCode : Largest Number
- Leetcode Largest Number
- [LeetCode] Largest Number
- [leetcode]179 Largest Number
- [LeetCode] Largest Number
- Leetcode Largest Number
- [LeetCode]Largest Number
- leetcode 179: Largest Number
- 【LeetCode】Largest Number
- 【Leetcode】Largest Number
- [LeetCode]179.Largest Number
- LeetCode: Largest Number
- Largest Number|leetcode解决方案
- leetcode 之Largest Number
- Linux|CentOS 7 64 挂载硬盘呦!
- ashx 使用Session
- The problem of deleting the remote branch
- Spring4配置AOP
- Decode Ways
- Leetcode题解(8):L179/Largest Number
- C++ 学习笔记一易忽略的地方
- poj 3280 Cheapest Palindrome(区间dp)
- linux命令行下操作mysql的命令汇总
- Qt:拖拽图片到QLabel上并显示
- CentOS 6.4 64位下安装BCM4313无线网卡驱动(血泪修改版)
- 关于内核autoconf.h
- Strassen矩阵乘法
- 关于判断对象或集合等不为空小细节,记录罢了