How to rearrange NSDictionary according to the values? [closed] - objective-c

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I need to list all dictionary values. Like highest mark to lowest. How can I handle this?
I need to list all marks and corresponding names and details in a table view.
2015-04-06 14:48:53.381 camelProject[3310:597950] valueforkey title = (
{
CamelID = 237;
Color = bg;
Comments = "Fhjfnfnfjfihgjfmsndidm,almcmcuirowmvn vmmc Jdmdmcm";
CompID = 235;
DateOfBirth = "/Date(1424725200000)/";
Description = "rtrtttrtrehndskvn;lkdf;lm;mgemln;lm';' jknt;l";
FromUserID = 564987631;
FromUsername = 564987631;
ID = 4;
IndvMarks = "5;5;3;4;2;2;2;2;5;9";
Marks = 39;
Name = name3sv;
OutOF = 100;
ProfilePhoto = "2D0B36F3-71B3-4B5F-A375-7AD4D0AFF1AF.jpg\n";
TOname = hasnam;
ToUserName = 564987631;
Types = dsfv;
UserID = 564987631;
fromname = hasnam;
},
{
CamelID = 237;
Color = bg;
Comments = "";
CompID = 235;
DateOfBirth = "/Date(1424725200000)/";
Description = "rtrtttrtrehndskvn;lkdf;lm;mgemln;lm';' jknt;l";
FromUserID = 564987631;
FromUsername = 564987631;
ID = 5;
IndvMarks = "5;4;5;7;6;0;6;5;4;6";
Marks = 48;
Name = name3sv;
OutOF = 100;
ProfilePhoto = "2D0B36F3-71B3-4B5F-A375-7AD4D0AFF1AF.jpg\n";
TOname = hasnam;
ToUserName = 564987631;
Types = dsfv;
UserID = 564987631;
fromname = hasnam;
},
{
CamelID = 237;
Color = bg;
Comments = Gucjhkhvnkvnvnvknkjbkvjhvvkb;
CompID = 235;
DateOfBirth = "/Date(1424725200000)/";
Description = "rtrtttrtrehndskvn;lkdf;lm;mgemln;lm';' jknt;l";
FromUserID = 564987631;
FromUsername = 564987631;
ID = 6;
IndvMarks = "3;4;4;3;5;4;4;3;3;5";
Marks = 38;
Name = name3sv;
OutOF = 100;
ProfilePhoto = "2D0B36F3-71B3-4B5F-A375-7AD4D0AFF1AF.jpg\n";
TOname = hasnam;
ToUserName = 564987631;
Types = dsfv;
UserID = 564987631;
fromname = hasnam;
},
{
CamelID = 236;
Color = wejr;
Comments = "Jfj ki idhvjfn isms isn't if jfj Jen hik";
CompID = 235;
DateOfBirth = "/Date(1427058000000)/";
Description = jwenrfernkgr;
FromUserID = 564987631;
FromUsername = 564987631;
ID = 21;
IndvMarks = "8;6;10;10;10;7;5;8;9;5";
Marks = 78;
Name = name;
OutOF = 100;
ProfilePhoto = "E7735AF4-8EAB-41E7-A3F2-3280DBED0389.jpg\n";
TOname = lukman;
ToUserName = 564987634;
Types = wenjewfn;
UserID = 564987634;
fromname = hasnam;
}
)

Answer 1

Get the values into a array and sort them using a sort descriptor.
NSArray *array = [dictioanry objectForKey:#"title"];
NSSortDescriptor* marksDescriptor = [NSSortDescriptor sortDescriptorWithKey:#"Marks"
ascending:YES];
NSArray* sortedObjects = [array sortedArrayUsingDescriptors:[NSArray arrayWithObjects:marksDescriptor, nil]];
//YOu can put this object back into NSDictionary if you want it for later
I think your dictionary should be looking like this.
So the code above should work to sort the values. Here is the sample code that I did the testing with.
Note: Save your JSON string in your test.json and add it to your project. or download the file from here and add it to your project
NSString *filePath = [[NSBundle mainBundle] pathForResource:#"test" ofType:#"json"];
NSData *data = [NSData dataWithContentsOfFile:filePath];
NSDictionary *jsonDictionary=[NSJSONSerialization
JSONObjectWithData:data
options:NSJSONReadingMutableLeaves
error:nil];
NSLog(#"%#",jsonDictionary);
NSArray *array = [jsonDictionary objectForKey:#"title"];
NSSortDescriptor* marksDescriptor = [NSSortDescriptor sortDescriptorWithKey:#"Marks"
ascending:YES];
NSArray* sortedObjects = [array sortedArrayUsingDescriptors:[NSArray arrayWithObjects:marksDescriptor, nil]];
NSLog(#"%#",sortedObjects);

Answer 2

Example :
NSArray *originalArray = #[
#{#"page_no": #"27"},
#{#"page_no": #"1"},
#{#"page_no": #"12"},
#{#"page_no": #"23"},
#{#"page_no": #"3"},
#{#"page_no": #"2"},
#{#"page_no": #"17"},
];
NSSortDescriptor *alphaNumSD = [NSSortDescriptor sortDescriptorWithKey:#"page_no"
ascending:YES
comparator:^(NSString *string1, NSString *string2)
{
return [string1 compare:string2 options:NSNumericSearch];
}];
NSArray *sortedArray = [originalArray sortedArrayUsingDescriptors:#[alphaNumSD]];
NSLog(#"%#", sortedArray);
Output :
(
{
"page_no" = 1;
},
{
"page_no" = 2;
},
{
"page_no" = 3;
},
{
"page_no" = 12;
},
{
"page_no" = 17;
},
{
"page_no" = 23;
},
{
"page_no" = 27;
}
)
It definitely works as expected.