Programming Solutions for Project Euler's Questions and some basic C programs

In  computer science  and  information theory , a  Huffman code  is a particular type of optimal  prefix code  that is commonly used for  l...

Concept(Source Wikipedia): Let  A ,  B  be two  square matrices  over a  ring   R . We want to calculate the matrix product  C  as If ...

Surprisingly there are only three numbers that can be written as the sum of fourth powers of their digits: 1634 = 1 4  + 6 4  + 3 4  + 4...

Consider all integer combinations of  a b  for 2 ≤  a  ≤ 5 and 2 ≤  b  ≤ 5: 2 2 =4, 2 3 =8, 2 4 =16, 2 5 =32 3 2 =9, 3 3 =27, 3 4 =81, 3...

Starting with the number 1 and moving to the right in a clockwise direction a 5 by 5 spiral is formed as follows: 21  22 23 24  25 20   ...

Euler discovered the remarkable quadratic formula: n ² +  n  + 41 It turns out that the formula will produce 40 primes for the consecu...

A permutation is an ordered arrangement of objects. For example, 3124 is one possible permutation of the digits 1, 2, 3 and 4. If all of t...