Creating a two dimensional array in Objective-C

Question

Whats the easiest way to declare a two dimensional array in Objective-C? I am reading an matrix of numbers from a text file from a website and want to take the data and pla

Answer 1

First you to have set An NSMutableDictionary on .h file

            @interface MSRCommonLogic : NSObject
            {
                NSMutableDictionary *twoDimensionArray;
            }

            then have to use following functions in .m file


            - (void)setValuesToArray :(int)rows cols:(int) col value:(id)value
            {
                if(!twoDimensionArray)
                {
                    twoDimensionArray =[[NSMutableDictionary alloc]init];
                }

                NSString *strKey=[NSString stringWithFormat:@"%dVs%d",rows,col];
                [twoDimensionArray setObject:value forKey:strKey];

            }

            - (id)getValueFromArray :(int)rows cols:(int) col
            {
                NSString *strKey=[NSString stringWithFormat:@"%dVs%d",rows,col];
                return  [twoDimensionArray valueForKey:strKey];
            }


            - (void)printTwoDArray:(int)rows cols:(int) cols
            {
                NSString *strAllsValuesToprint=@"";
                strAllsValuesToprint=[strAllsValuesToprint stringByAppendingString:@"\n"];
                for (int row = 0; row < rows; row++) {
                    for (int col = 0; col < cols; col++) {

                        NSString *strV=[self getValueFromArray:row cols:col];
                        strAllsValuesToprint=[strAllsValuesToprint stringByAppendingString:[NSString stringWithFormat:@"%@",strV]];
                        strAllsValuesToprint=[strAllsValuesToprint stringByAppendingString:@"\t"];
                    }
                    strAllsValuesToprint= [strAllsValuesToprint stringByAppendingString:@"\n"];
                }

                NSLog(@"%@",strAllsValuesToprint);

            }