How to resolve the algorithm Nim game step by step in the Wren programming language

Published on 12 May 2024 09:40 PM
#Wren

How to resolve the algorithm Nim game step by step in the Wren programming language

Table of Contents

Problem Statement

Nim is a simple game where the second player─if they know the trick─will always win.

The game has only 3 rules:

To win every time,   the second player simply takes 4 minus the number the first player took.   So if the first player takes 1,   the second takes 3; if the first player takes 2,   the second should take 2; and if the first player takes 3,   the second player will take 1. Design a simple Nim game where the human player goes first, and the computer always wins. The game should enforce the rules.

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Nim game step by step in the Wren programming language

Source code in the wren programming language

import "io" for Stdin, Stdout

var showTokens = Fn.new { |tokens| System.print("Tokens remaining %(tokens)\n") }
 
var tokens = 12
while (true) {
    showTokens.call(tokens)
    System.write("  How many tokens 1, 2 or 3? ")
    Stdout.flush()
    var t = Num.fromString(Stdin.readLine())
    if (t.type != Num || !t.isInteger || t < 1 || t > 3) {
        System.print("\nMust be an integer between 1 and 3, try again.\n")
    } else {
        var ct = 4 - t
        var s = (ct != 1) ? "s" : ""
        System.write("  Computer takes %(ct) token%(s)\n\n")
        tokens = tokens - 4
    }
    if (tokens == 0) {
        showTokens.call(0)
        System.print("  Computer wins!")
        break
    }
}

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