算法竞赛最简单的一题：字符串和数字间隔游戏

#include <iostream>
#include<cmath>
using namespace std;

int main() {
	char arr[] = {"us2ststudent123456789"};
	char *out;
	char *p =arr;
	char a[20]="";
	char b[20]="";
	int i=0,j=0;
	while(*p != '\0')
	{
		if(*p >= 'a' && *p <= 'z')
		{

			a[i++]=*p;
		}else if(*p >= '0' && *p <= '9')
		{
			b[j++]=*p;
		}else{

			cout<<"string is not correct"<<endl;
			
		}
		p++;
	}

	cout<<"a: "<<a<<endl;
	cout<<"b: "<<b<<endl;
	cout<<"i: "<<i<<endl;
	cout<<"j: "<<j<<endl;
	int index = 0;

	if(abs(i-j)<=1)
	{
		
		if(i>j)
		{ 
			for(int k=0;k<i;k++)
			{
				out[index++] = a[k];
				index++;
			}

			index =1;
			for(int k=0;k<j;k++)
			{
				out[index++] = b[k];
				index++;
			}
		}else
		{
			for(int k=0;k<j;k++)
			{
				out[index++] = a[k];
				index++;
			}
			index =1;
			for(int k=0;k<i;k++)
			{
				out[index++] = b[k];
				index++;
			}

		}
	}else{
	cout<<"failed"<<endl;
	}
	cout <<"out: "<<out << endl;
	return 0;
}

a: usststudent

b: 2123456789

i: 11

j: 10

out: u2s1s2t3s4t5u6d7e8n9t

hello https://tool.lu/

sandbox> exited with status 0