CODEWITHSUNDEEP
iosobjective-carraysnsmutablearraynsmutabledictionary
Maff
Maff

Reputation: 1032

Creating Different Permutations from different Arrays Values

I am trying to write a method which allows me to create a different String permutations, based on the values I have stored within 3 different arrays. Currently I have a NSMutableDictionary that contains 3 different keys, and associated to each key we have an NSMutableArray array that contains a list of different String objects.

How woulld I loop through each of my NSMutableArray arrays which are stored within my NSMutableDictionary, and build a string value for each node from the arrays. So essentially, something like the following: A1[0] = "Hello", A2[0] = "There", A3[0] = "Guys", which would essentially build me a string like this: "HelloThereGuys".

Any suggestions, or possibly different approaches to this problem will be appreciated.

Upvotes: 0

Views: 72

Answers (1)

Amin Negm-Awad
Amin Negm-Awad

Reputation: 16650

First of all I want to agree with hochl. ;-) But I think, that you want to create a string containing a word from each array in the same index position?

NSMutableArray *enums = [NSMutableArray new];
for( NSString *key in dictionary )
{ 
  NSEnumerator *enum = [dictionary[key] objectEnumerator]; // Forgot that in prior version
  [enums addObject:enum];
}

while( YES )
{
  NSMutableString *line = [NSMutableString new];
  BOOL done = NO;
  for( NSEnumerator *enum in enums ) 
  {
    NString *word = [enum nextObject];
    if( word == nil )
    {
      done = YES;
      break;
    }

    [line addString:word];
  }

  if (done)
  {
    break;
  }

  NSLog (@"%@", line );
}

Did I get you right?

Upvotes: 1

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