How to resolve the algorithm Letter frequency step by step in the F# programming language

Published on 12 May 2024 09:40 PM
#F_Sharp

How to resolve the algorithm Letter frequency step by step in the F# programming language

Table of Contents

Problem Statement

Open a text file and count the occurrences of each letter. Some of these programs count all characters (including punctuation), but some only count letters A to Z.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Letter frequency step by step in the F# programming language

Source code in the fsharp programming language

let alphabet =
    ['A'..'Z'] |> Set.ofList

let letterFreq (text : string) =
    text.ToUpper().ToCharArray()
    |> Array.filter (fun x -> alphabet.Contains(x))
    |> Seq.countBy (fun x -> x)
    |> Seq.sort

let v = "Now is the time for all good men to come to the aid of the party"

let res = letterFreq v

for (letter, freq) in res do
    printfn "%A, %A" letter freq

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