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How to find the first non-repeated character in a string with C++

1 Answer

0 votes
#include <iostream> 

using namespace std; 
  
char getFirstNonRepeatedCharacter(char *s) { 
    int ascii_count[256]; 
  
    int i; 
    for (i = 0; *(s+i); i++) 
        if(*(s+i)!=' ') 
            ascii_count[*(s+i)]++; 
    int n = i; 
  
    for (i = 0; i < n; i++) 
        if (ascii_count[*(s+i)] == 1) 
            return s[i]; 
    
    return ' ';
} 
  
int main() 
{ 
    char s[] = "c++ programming"; 
    
    char ch = getFirstNonRepeatedCharacter(s); 
    
    cout << ch; 
    
    return 0; 
} 


/*
run:

c

*/

 




answered Feb 11 by avibootz
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