3.1
Q:
Write a function bandit() that takes a string argument and returns a string where every consonant "x" has been replaced by "xox".


A:
I have used the PHP language here - one of its functions, str_replace(), is very helpful in this problem.

<?php
$string = "a womble is sitting here";
$cnsts = array("b", "c", "d", "f", "g", "h", "j", "k", "l", "m", "n", "p", "q", "r", "s", "t", "v", "w", "x", "z");
$newcnsts = array("bob", "coc", "dod", "fof", "gog", "hoh", "joj", "kok", "lol", "mom", "non", "pop", "qoq", "ror", "sos", "tot", "vov", "wow", "xox", "zoz");
$cocnonsostotsos = str_replace($cnsts, $newcnsts, $string);
echo $cocnonsostotsos
?>

The result is "a wowomomboblole isos sositottotinongog hoherore".

The script works for lower-case letters only, but this could be easily changed. The code is somewhat brute-force.



3.2
Q:
Write a function f() that takes four integer arguments: a, b, c and d.  If a and b are both even and c is positive, or if a and b are both odd and d is negative, return 1.  Otherwise, return 0. 


A:
I have used a pseudo-code similar to the BASIC programming language for the answer. One of BASIC's functions is x = int(x), which (in the case of my answer) checks whether x is an integer.

input	A,B,C,D
let 	A/2 = X
let 	B/2 = Y
if	 		X = int(X) 
		and 	Y = int(Y)
		and 	c > 0
	or		X != int(X)
		and	Y != int(y)
		and	d < 0
then	print "1"
else 	print "0"