paizaラーニングレベルアップ問題集の「最大値と最小値」をやってみた。

paizaラーニングレベルアップ問題集の最大値と最小値をやってみました。

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問題

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普通はmax(a, b, c) - min(a, b, c)と書く、と思いますが、
今回はmax(abs(b-a), abs(c-a), abs(c-b))で書いてみたいと思います。
（特に深い理由はありません）

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C

#include <stdio.h>
#include <stdlib.h>

int chmax(int* a, int b) {
	if (b > *a) *a = b;
	return *a;
}

int main() {
	int a, b, c;
	scanf("%d %d %d", &a, &b, &c);
	int ans = abs(b - a);
	chmax(&ans, abs(c - a));
	chmax(&ans, abs(c - b));
	printf("%d\n", ans);
	return 0;
}

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C++

#include <iostream>
using namespace std;

int main() {
	int a, b, c;
	cin >> a >> b >> c;
	cout << max(abs(b - a), max(abs(c - a), abs(c - b))) << endl;
	return 0;
}

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C#

using System;

class Program
{
	public static void Main()
	{
		int[] abc = Array.ConvertAll(Console.ReadLine().Split(), int.Parse);
		int a = abc[0], b = abc[1], c = abc[2];
		Console.WriteLine(Math.Max(Math.Abs(b - a), Math.Max(Math.Abs(c - a), Math.Abs(c - b))));
	}
}

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Go

package main
import (
	"fmt"
	"math"
)

func main() {
	var a, b, c int
	fmt.Scan(&a, &b, &c)
	fmt.Println(int(math.Max(math.Abs(float64(b - a)), math.Max(math.Abs(float64(c - a)), math.Abs(float64(c - b))))))
}

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Java

import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		sc.close();
		System.out.println(Math.max(Math.abs(b - a), Math.max(Math.abs(c - a), Math.abs(c - b))));
	}
}

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JavaScript

const [a, b, c] = require("fs").readFileSync("/dev/stdin", "utf8").split(' ').map(Number);
console.log(Math.max(Math.abs(b - a), Math.abs(c - a), Math.abs(c - b)));

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Kotlin

fun main() {
	val (a, b, c) = readln().split(' ').map { it.toInt() }
	println(Math.max(Math.abs(b - a), Math.max(Math.abs(c - a), Math.abs(c - b))))
}

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PHP

<?php
	[$a, $b, $c] = array_map("intval", explode(' ', fgets(STDIN)));
	echo max(abs($b - $a), abs($c - $a), abs($c - $b)), PHP_EOL;
?>

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Perl

use List::Util qw(max);

my ($a, $b, $c) = map { int($_) } split ' ', <STDIN>;
print max(abs($b - $a), abs($c - $a), abs($c - $b)), $/;

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Python3

a, b, c = map(int, input().split())
print(max(abs(b - a), abs(c - b), abs(c - a)))

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Ruby

a, b, c = gets.split.map(&:to_i)
p [(b - a).abs, (c - a).abs, (c - b).abs].max

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Scala

import scala.io.StdIn._

object Main extends App{
	val Array(a, b, c) = readLine().split(' ').map { _.toInt }
	println(Math.max(Math.abs(b - a), Math.max(Math.abs(c - a), Math.abs(c - b))))
}

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Swift

let abc = readLine()!.split(separator: " ").compactMap { Int($0) }
let (a, b, c) = (abc[0], abc[1], abc[2])
print(max(abs(b - a), abs(c - a), abs(c - b)))