﻿ ArraySort - 数组函数 - MQL4参考

MQL4参考 数组函数 ArraySort

# ArraySort

Sorts numeric arrays by first dimension. The AS_SERIES flag is taken into account in sorting.

 bool  ArraySort(    void&       array[],                // array for sorting    int         count=WHOLE_ARRAY,      // count    int         start=0,                // starting index    int         direction=MODE_ASCEND   // sort direction    );

Parameters

array[]

[in][out]  Numeric array for sorting.

count=WHOLE_ARRAY

[in]  Count of elements to sort. By default, it sorts the whole array.

start=0

[in]  Starting index to sort. By default, the sort starts at the first element.

direction=MODE_ASCEND

[in]  Sort direction. It can be any of the following values:

MODE_ASCEND sort in ascend direction,
MODE_DESCEND sort in descend direction.

Return Value

The function returns true on success, otherwise  - false.

Example:

 //+------------------------------------------------------------------+ //| Script program start function                                    | //+------------------------------------------------------------------+ void OnStart()   { //--- example of sorting of one dimensional array    double num_array={4,1,6,3,9}; //--- now array contains values 4,1,6,3,9    ArraySort(num_array); //--- now array is sorted 1,3,4,6,9    ArraySort(num_array,WHOLE_ARRAY,0,MODE_DESCEND); //--- now array is sorted 9,6,4,3,1   //--- example of sorting of two dimensional array    int  DataArray={{7,3},{3,1},{57,14},{12,4},{11,1}}; //--- sorting of DataArray[][] by first dimension  (ascending)    ArraySort(DataArray,WHOLE_ARRAY,0,MODE_ASCEND); //--- print sorted array    for(int i=0; i<5; i++)      {       string str="index "+IntegerToString(i)+": ";       for(int j=0; j<2; j++)         {          if(j==0) str+="{"; else str+=",";          str+=IntegerToString(DataArray[i,j]);          if(j==1) str+="}";         }       Print(str);      } //--- output //index 0: {3,1} //index 1: {7,3} //index 2: {11,1} //index 0: {12,4} //index 4: {57,14}   } ArraySizeArrayCopyRates 