CareerCup

Is it as simple as the following code?

#include <stdio.h>

void parse(const char* src)
{
    int times;
    char c;
    for(; c = *src; src += 2){
        sscanf(src+1, "%d", &times);
        for(; times > 0; --times) putchar(c);
    }
}

int main()
{
    parse("a3b2c4");
    
    getchar();
    return 0;
}

Sorry for the misleading code above. I was being stupid again.

#include <stdio.h>
#include <ctype.h>
void parse(const char* src)
{
    int times;
    char c, *p;
    for(; c = *src; src = p){
        sscanf(src+1, "%d", &times);
        for(; times > 0; --times) putchar(c);
        for(p = src+2; isdigit(*p); ++p) ; 
    }
}

int main()
{
    parse("a3b2c4");
    
    getchar();
    return 0;
}

I definitely can not get the job! There's a bug in the code above again.

#include <stdio.h>
#include <ctype.h>
void parse(const char* src)
{
    int times;
    char c;
    for(; c = *src; ){
        sscanf(src+1, "%d", &times);
        for(; times > 0; --times) putchar(c);
        for(src += 2; isdigit(*src); ++src) ; 
    }
}

int main()
{
    parse("a3b2c4");
    
    getchar();
    return 0;
}

did you test if it works?

C++ version.

#include <iostream>
#include <sstream>
#include <stdexcept>

std::string decode(const std::string& str) {
	std::stringstream ss(str);
	std::string out;
	out.reserve(str.size() * 3); // estimated size to avoid reallocation

	while (!ss.eof()) {
		char c; int n;
		ss >> c >> n;
		if (ss.fail())
			throw std::invalid_argument("can't decode");
		out.append(n, c);
	
	}
	return out;
}

int main() {
	std::cout << decode("a3b2c4") << std::endl;
	return 0;
}

Here is the code....
#include <stdio.h>
#include <string.h>
int main()
{
char a[8]="a3b4c2";
int i,j,p;
double q;
gets(a);

for(i=0;i<strlen(a);i=i+2)
{
p=a[i+1] - '0';
for(j=p;j>0;j--)
{
printf("%c",a[i]);
}
}
return 0;
}

public static void main(String[] args) {
		
		String str= "a13b2c14d15";		
		Map<Character, Integer> alphaMap= new LinkedHashMap<>();		
		
		int count=0;
		char hold='\0';
		boolean flag=false;
		for(int i=0;i<str.length();i++)
		{
			if(str.charAt(i)<'0'||str.charAt(i)>'9')
				{

				flag=true;
				count=0;
				hold=str.charAt(i);				
				}
			else
			{			  	
			  count=count*10+(str.charAt(i)-48);
			  
			}
			if(flag)
			{
				alphaMap.put(hold, count);
			}
		}
		
		System.out.println(alphaMap);
		
		Set<Character> charSet= alphaMap.keySet();
		
		for(char c:charSet)
		{
			for(int i=0;i<alphaMap.get(c);i++)
			{
				System.out.print(c);
			}
		}
	}

int main()
{
	char *str = "a1b10c4";
	char ch;
	long count=0;
	int m;
	while(*str != '\0')
	{
		ch = *str;
		sscanf(str + 1, "%ld", &count);
		for(m=0; m<count; m++)
			printf("%c", ch);
		str++;
		while(*str >= '0' && *str <= '9')
			str++;
	}
	return 0;
}

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