paizaラーニングレベルアップ問題集の「九九表」をやってみた。

paizaラーニングレベルアップ問題集の九九表をやってみました。

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問題

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配列添字は0から始まりますので、二次元配列の要素A[i][j]には(i+1)*(j-1)が格納されます。

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C

#include <stdio.h>

const int N = 9;

int main() {
	int A[N][N];
	for (int i = 0; i < N; i++) {
		for (int j = 0; j < N; j++) {
			A[i][j] = (i + 1) * (j + 1);
		}
	}
	for (int i = 0; i < N; i++) {
		for (int j = 0; j < N; j++) {
			if (j) putchar(' ');
			printf("%d", A[i][j]);
		}
		puts("");
	}
	return 0;
}

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C++

#include <iostream>
#include <vector>
using namespace std;

const int N = 9;

int main() {
	vector<vector<int>> A(N, vector<int>(N));
	for (int i = 0; i < N; i++) {
		for (int j = 0; j < N; j++) {
			A[i][j] = (i + 1) * (j + 1);
		}
	}
	for (int i = 0; i < N; i++) {
		for (int j = 0; j < N; j++) {
			if (j) cout << ' ';
			cout << A[i][j];
		}
		cout << endl;
	}
	return 0;
}

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C#

using System;
using System.Linq;

class Program
{
	const int N = 9;
	
	public static void Main()
	{
		int[][] A = Enumerable.Range(1, N).Select(i => Enumerable.Range(1, N).Select(j => i * j).ToArray()).ToArray();
		for (int i = 0; i < N; i++) {
			for (int j = 0; j < N; j++) {
				if (j > 0) Console.Write(' ');
				Console.Write(A[i][j]);
			}
			Console.WriteLine();
		}
	}
}

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Go

package main
import "fmt"

var N = 9

func main() {
	A := make([][]int, N)
	for i := 0; i < N; i++ {
		A[i] = make([]int, N)
		for j := 0; j < N; j++ {
			A[i][j] = (i + 1) * (j + 1)
		}
	}
	for i := 0; i < N; i++ {
		for j := 0; j < N; j++ {
			if j > 0 {
				fmt.Print(" ")
			}
			fmt.Print(A[i][j])
		}
		fmt.Println()
	}
}

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Java

import java.util.*;
import java.util.stream.IntStream;

public class Main {

	static final int N = 9;

	public static void main(String[] args) {
		int[][] A = IntStream.rangeClosed(1, N).mapToObj(i -> IntStream.rangeClosed(1, N).map(j -> i * j).toArray()).toArray(int[][]::new);
		for (int i = 0; i < N; i++) {
			for (int j = 0; j < N; j++) {
				if (j > 0) System.out.print(' ');
				System.out.print(A[i][j]);
			}
			System.out.println();
		}
	}
}

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JavaScript

const N = 9;
const A = Array(N).fill().map((_, i)=>Array(N).fill().map((_, j)=>(i + 1) * (j + 1)));
A.forEach(a => console.log(a.join(' ')));

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Kotlin

fun main() {
	val N = 9
	val A = Array(N) { i -> Array(N) { j -> (i + 1) * (j + 1) } }
	for (i in 0 until N) {
		for (j in 0 until N) {
			if (j > 0) print(' ')
			print(A[i][j])
		}
		println()
	}
}

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PHP

<?php
	$N = 9;
	$A = [];
	for ($i = 1; $i <= $N; $i++) {
		$tmp = [];
		for ($j = 1; $j <= $N; $j++) {
			$tmp[] = $i * $j;
		}
		$A[] = $tmp;
	}
	for ($i = 0; $i < $N; $i++) {
		for ($j = 0; $j < $N; $j++) {
			if ($j) echo ' ';
			echo $A[$i][$j];
		}
		echo PHP_EOL;
	}
?>

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Perl

my $N = 9;
my @A;
for $i (1..$N) {
	my @tmp;
	for $j (1..$N) {
		push (@tmp, $i * $j);
	}
	push @A, [@tmp];
}
for (my $i = 0; $i < $N; $i++) {
	for (my $j = 0; $j < $N; $j++) {
		if ($j) {
			print ' ';
		}
		print $A[$i][$j];
	}
	print $/;
}

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Python3

N = 9
A = [[i * j for j in range(1, N+1)] for i in range(1, N+1)]
for i in range(N):
	print(' '.join(list(map(str, A[i]))))

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Ruby

N = 9
A = (1..N).each.map { |i| (1..N).each.map { |j| i * j } }
N.times do |i|
	N.times do |j|
		if j > 0
			print ' '
		end
		print A[i][j]
	end
	puts
end

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Scala

import scala.io.StdIn._

object Main extends App{
	val N = 9
	val A = (1 to N).map { i => (1 to N).map { j => i * j } }
	for (i <- 0 until N) {
		for (j <- 0 until N) {
			if (j > 0) print(' ')
			print(A(i)(j))
		}
		println()
	}
}

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Swift

let N = 9
let A = (1...N).map { i in (1...N).map { j in i * j } }
for i in 0..<N {
	print(A[i].map { String($0) }.joined(separator: " "))
}