How to resolve the algorithm Determine if a string has all the same characters step by step in the F# programming language

Published on 12 May 2024 09:40 PM
#F_Sharp

How to resolve the algorithm Determine if a string has all the same characters step by step in the F# programming language

Table of Contents

Problem Statement

Given a character string   (which may be empty, or have a length of zero characters):

Use (at least) these seven test values   (strings):

Show all output here on this page.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Determine if a string has all the same characters step by step in the F# programming language

Source code in the fsharp programming language

// Determine if a string has all the same characters. Nigel Galloway: June 9th., 2020
let fN n=if String.length n=0 then None else n.ToCharArray()|>Array.tryFindIndex(fun g->g<>n.[0])

let allSame n=match fN n with
               Some g->printfn "First different character in <<<%s>>> (length %d) is hex %x at position %d" n n.Length (int n.[g]) g
              |_->printfn "All Characters are the same in <<<%s>>> (length %d)" n n.Length 


allSame ""
allSame "   "
allSame "2"
allSame "333"
allSame ".55"
allSame "tttTTT"
allSame "4444 444k"

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