Finding Perticular Character in a file

dina3e · 07-03-2008, 01:26 AM

we are successfully count the NO. of words in a file . But i am unable to count a Particular Character in that file . i mean i just want to know how many times the particular CHARACTER is used in the file.

Mr. C. · 07-03-2008, 01:36 AM

Show what you have so far.

matthewg42 · 07-03-2008, 06:00 AM

Code:

#!/usr/bin/perl -np
# A highly not-understandable implementation in Perl ;)
# run this with the argument being the file to analyse

END () {
        print "COUNT Character\n";
        print "----- ---------\n";
        map {
                $c = $_;
                s/\n/\\n/;
                s/\t/\\t/;
                printf "%5d %s\n", $n{$c}, $_;
        } sort { $n{$a} <=> $n{$b} } keys %n;
}

# process input (don't forget we use the -n and -p options on the
# shabang line, so we don't need to explicitly iterate over input
# lines

map {$n{$_}++; } split("");

ghostdog74 · 07-03-2008, 08:30 AM

Quote:

Originally Posted by dina3e

we are successfully count the NO. of words in a file . But i am unable to count a Particular Character in that file . i mean i just want to know how many times the particular CHARACTER is used in the file.

suggestion:

Code:

sed 's/[[:print:]]/&\n/g' file

use sort and uniq (check uniq man page for option that can count occurences )

dina3e · 07-08-2008, 08:37 PM

Quote:

Originally Posted by ghostdog74

suggestion:

Code:

sed 's/[[:print:]]/&\n/g' file

use sort and uniq (check uniq man page for option that can count occurences )

well this works very interstingly with the use of the sort & uniq -c .

bigearsbilly · 07-11-2008, 02:31 PM

C for a change

Code:

#include <stdio.h>



char * ascii[] = {
"NUL", "SOH", "STX", "ETX",
 "EOT", "ENQ", "ACK", "BEL",
 "BS", "HT", "NL", "VT",
 "NP", "CR", "SO", "SI",
 "DLE", "DC1", "DC2", "DC3",
 "DC4", "NAK", "SYN", "ETB",
 "CAN", "EM", "SUB", "ESC",
 "FS", "GS", "RS", "US",
 "SP", "!", "\"", "#", "$",
 "%", "&", "'", "(", ")",
 "*", "+", ",", "-", ".",
 "/", "0", "1", "2", "3",
 "4", "5", "6", "7", "8",
 "9", ":", ";", "<", "=",
 ">", "?", "@", "A", "B",
 "C", "D", "E", "F", "G",
 "H", "I", "J", "K", "L",
 "M", "N", "O", "P", "Q",
 "R", "S", "T", "U", "V",
 "W", "X", "Y", "Z", "[",
 "\\", "]", "^", "_", "`",
 "a", "b", "c", "d", "e",
 "f", "g", "h", "i", "j",
 "k", "l", "m", "n", "o",
 "p", "q", "r", "s", "t",
 "u", "v", "w", "x", "y",
 "z", "{", "|", "}", "~",
 "DEL"};


static int array[256];
static int total;
main()
{

    int ch;
    while ((ch = fgetc(stdin)) != EOF){
	array[ch]++;
	total++;
    }
    for (ch=0; ch < 256; ch++) {
	printf("%d (%s) %d %.3f%%\n", ch,
				    isascii(ch)? ascii[ch]:"",
				    array[ch],
				    100 * (float) array[ch]/ (float) total

				    );
    }
}

dina3e · 07-11-2008, 11:07 PM

Thanks for the C code to find out the Number of the character in the inputed file .