Given a string of lowercase characters, the task is to print the string in a manner such that a character comes first in string displays first with all its occurrences in string.
Examples:
Examples:
Input : str = "occurrence" output : occcurreen Input : str = "cdab" Output : cdab
C Program
#include <stdio.h>
#include <string.h>
main()
{
char st[100],temp,s[100];
int i,k=0,j,flag=0;
gets(st);
for(i=0;st[i]!='\0';i++)
{
for(j=i;st[j]!='\0';j++)
{
if(k<strlen(st))
{
if(st[i] == st[j])
s[k++]=st[j];
}
else
{
flag=1;
break;
}
}
if(flag ==1)
break;
}
s[k]='\0';
puts(s);
}