classSolution{public:boolcheckIfExist(vector<int>& arr){for(inti=0;i<arr.size();i++) {for(intj=0;j<arr.size();j++) {if(i==j)continue;if(arr[i]==arr[j]*2)returntrue; } }returnfalse; } };
Problem: Implement a function to check if a singly linked list is a palindrome. 思路: 最简单的方法是 Reverse and compare. 另外一种非常经典的办法是用 Recursive 的思路,把一个list看成这种形式: 0 ( 1 ( 2 ( 3 ) 2 ) 1 ) 0 0 ( 1 ( 2 ( 3 3 ) 2 ) 1 ) 0 CC150里面给出的Code...
[root@iZuf6duhntxl6t2daa60xoZ ~]# yum install -y git gcc-c++ Last metadata expiration check: 0:01:07 ago on Wed 30 Mar 2022 06:37:15 PM CST. Package git-2.27.0-1.1.al8.x86_64 is already installed. Dependencies resolved. === Package Architecture Version Repository Size ===...
LeetCode #9 Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward. 判断一个整数是否是回文数,当一个整数正着念和反着念是一样的时候它是一个回文数。 根据给出的案例,可以判断,负数肯定不是回文数,...9图 .9图的只做(as) 先把...