[iOS]dijkstra in iOS

I use this algorithm to analyze Taipei MRT system.
https://github.com/dmitrikozlov/mj-dijkstra

And combine with a csv to NSDictionary code.

- (void) parseCSVFile

{

CSVParser *parser = [CSVParser new];

// get the path to the file in your xcode project's resource path

NSString *csvFilePath = [[NSBundle mainBundle] pathForResource:@"taipeiMRTstation" ofType:@"csv"];

[parser openFile:csvFilePath];

NSMutableArray *csvContent = [parser parseFile];

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

NSLog(@"content of line %d: %@", i, [csvContent objectAtIndex:i]);

}

NSMutableDictionary *MRTmapDictionary;

NSArray *arrayOfFirstLine;

NSArray *lineArray;

NSMutableDictionary *stationDict = [[NSMutableDictionary alloc] init];

for (NSArray *contentArray in csvContent) {

NSMutableArray *relationArray = [[NSMutableArray alloc] init];

// the #0 contentArray is reference array

if ([csvContent indexOfObject:contentArray] != 0) {

NSMutableDictionary *relationDict = [[NSMutableDictionary alloc] init];

for (NSString *objectInLine in contentArray) {

// index >= 1

// means object for relation, and the value not nil

if ([contentArray indexOfObject:objectInLine] > 0 && (![objectInLine isEqualToString:@""])) {

// prepare relation dictionary

NSNumber *length = [NSNumber numberWithFloat:[objectInLine floatValue]];

[relationDict setObject:length forKey:[arrayOfFirstLine objectAtIndex:[contentArray indexOfObject:objectInLine]]];

}

}

[stationDict setObject:relationDict forKey:[contentArray objectAtIndex:0]];

} else {

// catch first line array

arrayOfFirstLine = [[NSArray alloc] initWithArray:contentArray];

}

}

MRTGraph = [[NSDictionary alloc] initWithDictionary:stationDict];

NSLog(@"the MRTGraph is %@", MRTGraph);

[parser closeFile];

}