Sample Solution: C Code: #include<stdio.h>#include<string.h>#include<ctype.h>// Define a function pointer type that takes two characters and returns an integer.typedefint(*compare_func_t)(char,char);// This function checks if a given string is a palindrome.// It takes a string, its ...
/***判断回文数***///情况1.利用字符串判断回文//实现方法:利用字符串指针从头尾分别判断#include<stdio.h>#include<stdlib.h>#include<stdbool.h>#include<ctype.h>//typedef char Pre_; 方便调试回文时更改类型boolJudge_char(constchar*p);//声明一个布尔型变量的函数原型intmain(int argc,char*argv[])...
代码 #include <stdio.h>#include<string.h>intpalindrome(char*p) {if(NULL ==p) {return0; }intiLen =strlen(p);intiHalf = iLen /2;inti =0, iEnd = iLen -1;for(i =0; i <= iHalf; i++) {if(p[i] != p[iEnd -i]) {return0; } }return1; }intmain() {char* p1 ="hello ...
The result, , is now a palindrome.解题思路:贪心。仅仅考虑一边的情况就可以,以左半为例。不断贪心考虑pos离哪边的不匹配边界近,如此往复就可以。AC代码:#include <iostream> #include <cstdio> #include <string> #include <cmath> using namespace std; int main(){ int n, pos; string s; // fr...
bool palindrome( char *s ); 函数palindrome判断输入字符串char *s是否为回文。若是则返回 true ,否则返回 false 。 裁判测试程序样例: 代码语言:javascript 代码运行次数:0 #include<stdio.h>#include<string.h>#defineMAXN20typedefenum{false,true}bool;boolpalindrome(char*s);intmain(){char s[MAXN];sca...
#include <string.h> #include <cmath> using namespace std; const int maxn=2000006; typedef long long LL; int numPrime[maxn],numpalindrome[maxn]; void sieve() { int na=1000000*2; int m=sqrt(na+1); for(LL i=2; i<=m; i++)if(numPrime[i]){ ...
Coud you solve it without converting the integer to a string? 代码: boolisPalindrome(intx) {if(x<0)returnfalse;if(x==0)returntrue;inta[100],i,j,sum;for(i=0;x!=0;i++) { a[i]=x%10; x/=10; } sum=i; i--;if(a[0]==0)returnfalse;for(j=0;j<sum/2;j++,i--)if(a...
A non-empty string is called palindrome, if it reads the same from the left to the right and from the right to the left. For example, "abcba", "a", and "abba" are palindromes, while "abab" and "xy" are not. A string is called a substring of another string, if it can be obt...
2008-08-01 16:59 −Abstractstd::string为library type,而int、double为built-in type,两者无法利用(int)或(double)的方式互转,本文提出轉換的方式。 Introduction使用環境:Visual C++ 9.0 / Visual Studio 2008 M... 真OO无双 2 61357 如何判斷回文(palindrome) ? (C/C++) (C) (STL) ...
palindrome (回文)是一个对称的单词或句子,它的前后拼写相同,忽略了大小写和标点符号。下面是一个简短而低效的程序来反转回文字符串。它调用字符串方法charAt(i),该方法返回字符串中的第i个字符,从0开始计数。 public class StringDemo { public static void main(String[] args) { String palindrome = "Dot sa...