Question

How to remove repeated characters from string in C

Answer 1

#include <stdio.h>
#include <string.h>
  
int main()
{
    char s[32] = "abbbacaddddeeeefghiiiijj";
    int len, remove_len;
 
    len = strlen(s);
    remove_len = 0;
 
    for (int i = 0; i < (len - remove_len) ; ) {
        if (s[i] == s[i + 1]) {
            // shift all characters left
            for( int j = i; j < (len - remove_len); j++)
                s[j] = s[j + 1];
            remove_len++;
        }
        else {
            i++;
        }
    }
 
    puts(s);
    
    return 0;
}
 
      
/*
        
run:

abacadefghij
 
*/

 

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