NSMutableArray *temp =[NSMutableArray arrayWithObjects:@"3",@"5",@"4",@"1",@"7", nil];
for (int i = 0; i < [temp count]; i++) {
for (int j = i+1; j < [temp count]; j++) {
int a = [[temp objectAtIndex:i]intValue];
int b = [[temp objectAtIndex:j]intValue];
if ( a > b) {
[temp replaceObjectAtIndex:i withObject:[NSString stringWithFormat:@"%d",b]];
[temp replaceObjectAtIndex:j withObject:[NSString stringWithFormat:@"%d",a]];
}
}
}
