Please i need to change this to matlab programing

import random

source = "jiKnp4bqpmAbp"

target = "Hello, World!"

def fitness(source, target):

fitval = 0

for i in range(0, len(source)):

fitval += (ord(target[i]) - ord(source[i])) ** 2

return(fitval)

def mutate(source):

charpos = random.randint(0, len(source) - 1)

parts = list(source)

parts[charpos] = chr(ord(parts[charpos]) + random.randint(-1,1))

return(''.join(parts))

random.seed()

fitval = fitness(source, target)

i = 0

while True:

i += 1

m = mutate(source)

fitval_m = fitness(m, target)

if fitval_m < fitval:

fitval = fitval_m

source = m

print "%5i %5i %14s" % (i, fitval_m, m)

if fitval == 0:

break