Question

I am trying to develop an app that contains an array with a huge number of words. I want to create a new filtered array from it. Filtering is done based on a pattern that I have managed to create using a regular expression. For example, I should be able to filter out the word “apple” with a pattern “ap_l_” from my array with words. Can anyone help me out?

Answer 1

Use the below code it will filter the array

-(NSMutableArray *)searchByContains:(NSString *)containsString inputArray:(NSMutableArray *)inputArray
{
    NSLog(@"orginal Array count=%d",[inputArray count]);
    NSString *expression=[NSString stringWithFormat:@"SELF contains '%@'",containsString];
    NSLog(@"expression=%@",expression);
    NSPredicate *predicate = [NSPredicate predicateWithFormat:expression];    
    NSMutableArray *mArrayFiltered = [[inputArray filteredArrayUsingPredicate:predicate] mutableCopy];

    return mArrayFiltered;
}