Write contents of array to a text file in Document Directory iPhone

NSString *stringToWrite=[[NSString alloc]init];

    

    for (int i=0; i<[arrayToReloadRightTableData count]; i++)

        

    {

        stringToWrite=[stringToWrite stringByAppendingString:[NSString stringWithFormat:@"%@ ",[arrayToReloadRightTableData objectAtIndex:i]]];

        

    }

    

    [stringToWrite writeToFile:filePath atomically:YES encoding:NSUTF8StringEncoding error:nil];