lets say we have an array COUNT[256] which is initialized to zero.
1) traverse the string S from 0 to length-1
2) if COUNT[S[i] - '0'] == 0 , increment COUNT[S[i] - '0'] = 1;
3) else print the first repeating character.
-Mahesh
On Fri, Jun 8, 2012 at 2:26 PM, Anika Jain <anika.jai...@gmail.com> wrote:
> you will have to note time for of occurence of a character for all chars
>
>
> On Fri, Jun 8, 2012 at 2:15 PM, himanshu kansal <
> himanshukansal...@gmail.com> wrote:
>
>> how can we find 1st repeating character in string???
>> e.g. if the string is "abba" it should return 'b' and not 'a'.....
>>
>> note: hashing will give the answer as 'a'....
>>
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> Regards
> Anika Jain
>
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