Specific color from string - ios

Question

i have a uitableview, which gets populated by a pulling data from a website, so there is a new string for every cell. To that, i want to have show a HEX for the user, based on the text in the cell.
I have tryed myself to make it, without luck, but luckly found a javascript script which does what i try to do. This script, i now need to convert to obj-c, i have tryed it myself, but failed. I hope to get some help.
javascript: http://jsfiddle.net/sUK45/
My try in obj-c (here the strings aint based on the data from the web, but just an array):
unichar hash = 0;
NSArray *strings = [NSArray arrayWithObjects:#"MA", #"Ty", #"Ad", #"ER", nil];
for (int i = 0; i < [[strings objectAtIndex:indexPath.row] length]; i++) {
hash = [[strings objectAtIndex:indexPath.row] characterAtIndex:i] + ((hash < 5) - hash);
}
NSString *colour = #"#";
for (int i = 0; i < 3; i++) {
int value = (hash >> (i * 8)) & 0xFF;
colour = [NSString stringWithFormat:#"%#%d", colour, value];
}
NSLog(#"%#", colour);
But the data i get, aint a useable HEX - NSlog:
#2432550
#3600
#3400
#1200

Answer 1

Probably this is not the only one mistake. Change
hash = [[strings objectAtIndex:indexPath.row] characterAtIndex:i] + ((hash < 5) - hash);
to
hash = [[strings objectAtIndex:indexPath.row] characterAtIndex:i] + ((hash << 5) - hash);
UPDATE:
Also change
colour = [NSString stringWithFormat:#"%#%d", colour, value];
to
colour = [NSString stringWithFormat:#"%#%02x", colour, (unsigned int)value];
UPDATE2:
I have fixed one more error and simplified code:
unsigned int hash = 0;
NSArray *strings = [NSArray arrayWithObjects:#"MA", #"Ty", #"Ad", #"ER", nil];
NSString *string = [strings objectAtIndex:indexPath.row];
for (int i = 0; i < string.length; i++) {
hash = [string characterAtIndex:i] + ((hash << 5) - hash);
}
NSString *color = [NSString stringWithFormat:#"#%06x", hash % 0x1000000];
NSLog(#"%#", color);