swipe directions and loop text string - iphone

Question

Help me... I'm stuck. I'm trying to make simple game something like angry bird swipe. I don't know how to code this. I have two labels and swipe move code (up, down,left or right, any directions).
I want to transfer label1.text ("333333777777555555888888") on label2.text with shorter number ("3758"). So I can make Artificial Intelligence game better.
How do I do this?
Here's the code.
for (NSValue *point_value in TouchRecord) {
CGPoint current_point = [point_value CGPointValue];
NSUInteger idx = [self subregionIndexContainingPoint:current_point];
//collect string on label2
NSString *numValue = [[NSString alloc] initWithFormat:#"%d", idx];
label1.text = [label1.text stringByAppendingString:numValue];
}
Thanks.

Answer 1

I'm not entirely sure this is what you want but I think it is.
To shorten the string so that there are only one of each number use this function.
+(NSString*) removeDuplicateNumbersFromString:(NSString*)first{
//if first is "1112222334445" the return value of this function would be "12345"
NSString *end = [NSString stringWithString:#""]; //the return string
char last; //will track changes in numbers
for (int i = 0; i < [first length]; i++) {
char charAtIndex = [first characterAtIndex:i];
if (last != charAtIndex) {
//if the last character is different than the current character
//set the current character as last, and add that character to the return string
last = charAtIndex;
end = [end stringByAppendingFormat:#"%c",last];
}
}
NSLog(#"First:%#, End:%#",first,end); //prints out the start/end strings
return end;
}