rohit89

#include<stdio.h>
#include<openssl/sha.h>
#include<time.h>
#include<stdlib.h>
#include<string.h>

static void compute_stream_hash(char *a, char *b, char *c)
{
    unsigned char sha1[20];
    unsigned char hash[(20 * 2) + 1];

rohit89

def harmonic_sum n
	(1..n).each.inject(0) {|sum, i| sum += (1.0 / i)}
end

total_words = 2520 * harmonic_sum(900)
half = total_words / 2

sum = 0
(1..900).each do |i|
	sum += 1.0 / i

rohit89

require 'rubygems'
require 'hpricot'
require 'net/http'

def standard_deviation arr
	mean = arr.each.inject(0) {|sum, i| sum += i; sum} / arr.length.to_f
	new_arr = arr.each.map{|i| (i - mean) ** 2}
	(new_arr.each.inject(0) {|sum, i| sum += i; sum} / new_arr.length.to_f) ** 0.5
end

rohit89

def fact n
	return 1 if n == 0
	n.downto(1).inject(1) {|res, i| res *= i; res}
end

def sum n
	n.to_s.each_char.map{|ch| ch.to_i}.inject(0) {|sum, i| sum += i; sum}
end

(400..1000).each do |i| # fact 400 has 869 digits...close to the 889 required