Notice that the number 123456789 is a 9-digit number consisting exactly the numbers from 1 to 9, with no duplication. Double it we will obtain 246913578, which happens to be another 9-digit number consisting exactly the numbers from 1 to 9, only in a…

Notice that the number 123456789 is a 9-digit number consisting exactly the numbers from 1 to 9, with no duplication. Double it we will obtain 246913578, which happens to be another 9-digit number consisting exactly the numbers from 1 to 9, only in a…

[题目大意] 给一个不超过20位的数字,如果将它乘以2得到的数仅仅是原来的数字重新排列得到的,那就输出Yes,下一行输出加倍后的数.如果不是,输出No,下一行输出加倍后的数. [思路] 20位过于庞大,超出了long long,所以用数组来做,其中的算法核心有竖式乘法的数组计算法. [tips] 1 判断原数和double原数是否拥有同样数字的方法: 建立一个数组check[0~9],如果原数的第i位是a,则check[a]++:如果double原数的第i位是a,则check[a]--.最后检查…

Source: PAT A1023 Have Fun with Numbers (20 分) Description: Notice that the number 123456789 is a 9-digit number consisting exactly the numbers from 1 to 9, with no duplication. Double it we will obtain 246913578, which happens to be another 9-digit…

PAT中关于大数的有B1017,A1023,A1024 (A-Advance,B-Basic) B1017 1017. A除以B (20) 本题要求计算A/B,其中A是不超过1000位的正整数,B是1位正整数.你需要输出商数Q和余数R,使得A = B * Q + R成立. 输入格式: 输入在1行中依次给出A和B,中间以1空格分隔. 输出格式: 在1行中依次输出Q和R,中间以1空格分隔. 输入样例: 123456789050987654321 7 输出样例: 1763668415014109347…

专题一  字符串处理 A1001 Format(20) #include<cstdio> int main () { ]; int a,b,sum; scanf ("%d %d",&a,&b); sum=a+b; ) { printf ("-"); sum=-sum; } ; ) { s[top++]=; } ) { s[top++]=sum%; sum/=; } ;i>=;i--) { printf ("%d"…

在Java位运算总结-leetcode题目博文中总结了Java提供的按位运算操作符,今天又碰到LeetCode中一道按位操作的题目 Given a range [m, n] where 0 <= m <= n <= 2147483647, return the bitwise AND of all numbers in this range, inclusive. For example, given the range [5, 7], you should return 4. 题意:…

Sum of Consecutive Prime Numbers Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 20050   Accepted: 10989 Description Some positive integers can be represented by a sum of one or more consecutive prime numbers. How many such representatio…

You are given two linked lists representing two non-negative numbers. The most significant digit comes first and each of their nodes contain a single digit. Add the two numbers and return it as a linked list. You may assume the two numbers do not con…

Given a non-empty array of numbers, a0, a1, a2, … , an-1, where 0 ≤ ai < 231. Find the maximum result of ai XOR aj, where 0 ≤ i, j < n. Could you do this in O(n) runtime? Example: Input: [3, 10, 5, 25, 2, 8] Output: 28 Explanation: The maximum resul…