IOS Array Sorting

Descending: (from big to small)

-(void) sortarraydatas{    [Array_datas sortusingcomparator:^nscomparisonresult (id  _nonnull obj1, id  _ Nonnull obj2) {        rainfallstations *station_one = obj1;        Rainfallstations *station_two = obj2;                Double totalrain_one = Station_one.totalrain;        Double totalrain_two = Station_two.totalrain;        if (totalrain_one>totalrain_two) {            return nsorderedascending;        }        else if (Totalrain_one < totalrain_two) {            return nsordereddescending;        } else{            return nsorderedsame;        }    ];}

Ascending: (from small to large)

-(void) sortarraydatas{[Array_datas sortusingcomparator:^nscomparisonresult (ID _nonnull obj1, id _nonnull obj2) {rainfallstations*station_one =obj1; Rainfallstations*station_two =Obj2; DoubleTotalrain_one =Station_one.totalrain; DoubleTotalrain_two =Station_two.totalrain; if(totalrain_one>totalrain_two) {            returnnsordereddescending; }        Else if(Totalrain_one <totalrain_two) {            returnnsorderedascending; }Else{            returnNsorderedsame; }    }];}

IOS Array Sorting