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 katkat21 11Aug2009 14:15

String manipulation Problem

can someone solve my problem

if the string is college
the output must be
c=1
o=1
l=2
e=2
g=1

it counts that how many a letter does it used
thnk you ^^:)

 xpi0t0s 18Aug2009 01:59

Re: String manipulation Problem

I'd probably use an array of 26 ints initialised to zero, then for each letter encountered increment the relevant element. Pseudocode:
Code:

```int arr[26] initialise to zero char *str="college" for each character c in str   arr[str[c]-'a']++ end for for each element e of arr   if non-zero     print the letter (e+'a') and the count   end if end for```
arr[str[c]-'a']++ is the clever bit: str[c] is a char between 'a' and 'z', and subtracting 'a' from that gives us a number from 0-25 which we use as the index into the array. It may be a good idea to add some limits checking to this, for example if (str[c]>='a' && str[c]<='z') so that you don't accidentally increment something not in the array.

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