A sorter class to sort an array based on other arrays.
//+------------------------------------------------------------------+ //| class MultiSort<TItem,TKey1,TKey2,TKey3>. | //| Usage: Sorter class to sort an array based on other arrays. | //+------------------------------------------------------------------+ template<typename TItem,typename TKey1,typename TKey2,typename TKey3> class MultiSort { public: //--- method to sort items by keys void SortBy(TItem& items[], TKey1& keys1[], TKey2& keys2[], TKey3& keys3[], bool ascending_order1=true, bool ascending_order2=true, bool ascending_order3=true); };
Note:
Empty keys arrays are ignored by the sorter.
For example to sort position tickets by position open time (as the only sort key):
//--- sort tickets by position open time only MultiSort<long,datetime,int,int> sorter; int empty[]; sorter.SortBy(tickets,times,empty,empty);
Here is a complete example
//+------------------------------------------------------------------+ //| MultiSort_demo.mq5 | //| Copyright © 2018, Amr Ali | //| https://www.mql5.com/en/users/amrali | //+------------------------------------------------------------------+ #property copyright "Copyright © 2018, Amr Ali" #property description "Multi sort example - Sort position tickets by symbol then by open time then by open price in accending or descending order." #property version "1.000" #property script_show_inputs #include <MultiSort.mqh> //--- input variables input bool mode_asc_symbols = true; // ascending order for symbols input bool mode_asc_times = true; // ascending order for time input bool mode_asc_prices = true; // ascending order for price //--- global variables long tickets[]= {88806796,90462225,91039722,91200504,90389608,88429143,89452623,91487721,89323610,90439077,89355691,88943822}; string symbols[]= {"USDCAD","EURCHF","GBPCHF","EURUSD","EURUSD","EURCHF","AUDUSD","EURUSD","EURUSD","GBPCHF","EURCHF","AUDUSD"}; datetime times[]= {D'2020.12.07 09:31:40',D'2020.12.10 09:55:30',D'2020.12.07 03:16:05',D'2020.12.07 03:45:39',D'2020.12.09 14:34:42', D'2020.12.08 14:00:13',D'2020.12.07 12:34:42',D'2020.12.08 17:37:28',D'2020.12.10 02:34:55',D'2020.12.09 12:00:09', D'2020.12.10 17:56:09',D'2020.12.07 08:30:14'}; double prices[]= {1.24428,1.35444,1.37244,1.28973,1.39795,1.39960,1.15292,1.19290,1.11015,1.17936,1.37226,1.34722}; //+------------------------------------------------------------------+ //| Script program start function | //+------------------------------------------------------------------+ void OnStart() { Print("-------before sort-------"); for(int i=0; i<ArraySize(tickets); i++) PrintFormat("%8i | %8s | %8s | %8.5f",tickets[i],symbols[i],(string)times[i],prices[i]); //--- sort position tickets by symbol, open time and open price. MultiSort<long, string, datetime, double> multi_sorter; multi_sorter.SortBy(tickets, symbols, times, prices, mode_asc_symbols, mode_asc_times, mode_asc_prices); Print("-------MultiSort.SortBy(tickets,symbols,times,prices)-------"); for(int i=0; i<ArraySize(tickets); i++) PrintFormat("%8i | %8s | %8s | %8.5f",tickets[i],symbols[i],(string)times[i],prices[i]); } //+------------------------------------------------------------------+ /* Sample output -------before sort------- 88806796 | USDCAD | 2020.12.07 09:31:40 | 1.24428 90462225 | EURCHF | 2020.12.10 09:55:30 | 1.35444 91039722 | GBPCHF | 2020.12.07 03:16:05 | 1.37244 91200504 | EURUSD | 2020.12.07 03:45:39 | 1.28973 90389608 | EURUSD | 2020.12.09 14:34:42 | 1.39795 88429143 | EURCHF | 2020.12.08 14:00:13 | 1.39960 89452623 | AUDUSD | 2020.12.07 12:34:42 | 1.15292 91487721 | EURUSD | 2020.12.08 17:37:28 | 1.19290 89323610 | EURUSD | 2020.12.10 02:34:55 | 1.11015 90439077 | GBPCHF | 2020.12.09 12:00:09 | 1.17936 89355691 | EURCHF | 2020.12.10 17:56:09 | 1.37226 88943822 | AUDUSD | 2020.12.07 08:30:14 | 1.34722 -------MultiSort.SortBy(tickets,symbols,times,prices)------- 88943822 | AUDUSD | 2020.12.07 08:30:14 | 1.34722 89452623 | AUDUSD | 2020.12.07 12:34:42 | 1.15292 88429143 | EURCHF | 2020.12.08 14:00:13 | 1.39960 90462225 | EURCHF | 2020.12.10 09:55:30 | 1.35444 89355691 | EURCHF | 2020.12.10 17:56:09 | 1.37226 91200504 | EURUSD | 2020.12.07 03:45:39 | 1.28973 91487721 | EURUSD | 2020.12.08 17:37:28 | 1.19290 90389608 | EURUSD | 2020.12.09 14:34:42 | 1.39795 89323610 | EURUSD | 2020.12.10 02:34:55 | 1.11015 91039722 | GBPCHF | 2020.12.07 03:16:05 | 1.37244 90439077 | GBPCHF | 2020.12.09 12:00:09 | 1.17936 88806796 | USDCAD | 2020.12.07 09:31:40 | 1.24428 */
