How to resolve the algorithm Averages/Mode step by step in the Elena programming language

Published on 12 May 2024 09:40 PM
#Elena

How to resolve the algorithm Averages/Mode step by step in the Elena programming language

Table of Contents

Problem Statement

Write a program to find the mode value of a collection. The case where the collection is empty may be ignored. Care must be taken to handle the case where the mode is non-unique. If it is not appropriate or possible to support a general collection, use a vector (array), if possible. If it is not appropriate or possible to support an unspecified value type, use integers.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Averages/Mode step by step in the Elena programming language

Source code in the elena programming language

import system'routines;
import system'collections;
import extensions;

extension op
{
    get Mode()
    {
        var countMap := Dictionary.new(0);
        self.forEach:(item)
        {
            countMap[item] := countMap[item] + 1
        };
    
        countMap := countMap.Values.sort:(p,n => p > n);
    
        var max := countMap.FirstMember;
    
        ^ countMap
            .filterBy:(kv => max.equal(kv.Value))
            .selectBy:(kv => kv.Key)
            .toArray()
    }
}

public program()
{
    var array1 := new int[]{1, 1, 2, 4, 4};
    var array2 := new int[]{1, 3, 6, 6, 6, 6, 7, 7, 12, 12, 17};
    var array3 := new object[]{1, "blue", 2, 7.5r, 5, "green", "red", 5, 2, "blue", "white"};
    
    console 
        .printLine("mode of (",array1.asEnumerable(),") is (",array1.Mode,")")
        .printLine("mode of (",array2.asEnumerable(),") is (",array2.Mode,")")
        .printLine("mode of (",array3.asEnumerable(),") is (",array3.Mode,")")
        .readChar()
}

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