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@anonymously115

paizaラーニングレベルアップ問題集の「ランダムアクセス」をやってみた。

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paizaラーニングレベルアップ問題集の「ランダムアクセス」をやってみました。

問題
ランダムアクセス

複数回のランダムアクセス

C
ランダムアクセス
#include <stdio.h>

int main() {
	int n, m;
	scanf("%d %d", &n, &m);
	m -= 1;
	int A[n];
	for (int i = 0; i < n; i++) scanf("%d", &A[i]);
	printf("%d\n", A[m]);
	return 0;
}
複数回のランダムアクセス
#include <stdio.h>

int main() {
	int n;
	scanf("%d", &n);
	int A[n];
	for (int i = 0; i < n; i++) scanf("%d", &A[i]);
	int q;
	while (q--) {
		int b;
		scanf("%d", &b);
		b -= 1;
		printf("%d\n", A[b]);
	}
	return 0;
}
C++
ランダムアクセス
#include <iostream>
#include <vector>
using namespace std;

int main() {
	int n, m;
	cin >> n >> m;
	m -= 1;
	vector<int> A(n);
	for (int i = 0; i < n; i++) cin >> A[i];
	cout << A[m] << endl;
	return 0;
}
複数回のランダムアクセス
#include <iostream>
#include <vector>
using namespace std;

int main() {
	int n;
	cin >> n;
	vector<int> A(n);
	for (int i = 0; i < n; i++) cin >> A[i];
	int q;
	cin >> q;
	while (q--) {
		int b;
		cin >> b;
		b -= 1;
		cout << A[b] << endl;
	}
	return 0;
}
C#
ランダムアクセス
using System;

class Program
{
	public static void Main()
	{
		int[] nm = Array.ConvertAll(Console.ReadLine().Split(), int.Parse);
		int m = nm[1] - 1;
		int[] A = Array.ConvertAll(Console.ReadLine().Split(), int.Parse);
		Console.WriteLine(A[m]);
	}
}
複数回のランダムアクセス
using System;

class Program
{
	public static void Main()
	{
		Console.ReadLine();
		int[] A = Array.ConvertAll(Console.ReadLine().Split(), int.Parse);
		Console.ReadLine();
		int[] B = Array.ConvertAll(Console.ReadLine().Split(), b => int.Parse(b) - 1);
		foreach (int b in B) Console.WriteLine(A[b]);
	}
}
Go
ランダムアクセス
package main
import "fmt"

func main() {
	var n, m int
	fmt.Scan(&n, &m)
	m -= 1
	A := make([]int, n)
	for i := 0; i < n; i++ {
		fmt.Scan(&A[i])
	}
	fmt.Println(A[m])
}
複数回のランダムアクセス
package main
import "fmt"

func main() {
	var n int
	fmt.Scan(&n)
	A := make([]int, n)
	for i := 0; i < n; i++ {
		fmt.Scan(&A[i])
	}
	var Q int
	fmt.Scan(&Q)
	for q := 0; q < Q; q++ {
		var b int
		fmt.Scan(&b)
		b -= 1
		fmt.Println(A[b])
	}
}
Java
ランダムアクセス
import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int m = sc.nextInt() - 1;
		sc.nextLine();
		int[] A = Arrays.stream(sc.nextLine().split(" ")).mapToInt(Integer::parseInt).toArray();
		sc.close();
		System.out.println(A[m]);
	}
}
複数回のランダムアクセス
import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		sc.nextLine();
		int[] A = Arrays.stream(sc.nextLine().split(" ")).mapToInt(Integer::parseInt).toArray();
		for (int q = sc.nextInt(); q > 0; q--) {
			int b = sc.nextInt() - 1;
			System.out.println(A[b]);
		}
		sc.close();
	}
}
JavaScript
ランダムアクセス
const [[n, m], A] = require("fs").readFileSync("/dev/stdin", "utf8").trim().split('\n').map(s => s.split(' ').map(Number));
console.log(A[m-1]);
複数回のランダムアクセス
const [[n], A, [q], B] = require("fs").readFileSync("/dev/stdin", "utf8").trim().split('\n').map(s => s.split(' ').map(Number));
B.forEach(b => console.log(A[b-1]));
Kotlin
ランダムアクセス
fun main() {
	val (_, m) = readln().split(' ').map { it.toInt() }
	val A = readln().split(' ').map { it.toInt() }
	println(A[m-1])
}
複数回のランダムアクセス
fun main() {
	readln()
	val A = readln().split(' ').map { it.toInt() }
	readln()
	val B = readln().split(' ').map { it.toInt() - 1 }
	for (b in B) println(A[b])
}
PHP
ランダムアクセス
<?php
	[$n, $m] = array_map("intval", explode(' ', fgets(STDIN)));
	$m -= 1;
	$A = array_map("intval", explode(' ', fgets(STDIN)));
	echo $A[$m], PHP_EOL;
?>
複数回のランダムアクセス
<?php
	$n = intval(fgets(STDIN));
	$A = array_map("intval", explode(' ', fgets(STDIN)));
	$q = intval(fgets(STDIN));
	$B = array_map(fn($b) => intval($b) - 1, explode(' ', fgets(STDIN)));
	foreach ($B as $b) echo $A[$b], PHP_EOL;
?>
Perl
ランダムアクセス
my ($n, $m) = map { int($_) } split ' ', <STDIN>;
$m -= 1;
my @A = map { int($_) } split ' ', <STDIN>;
print "$A[$m]$/";
複数回のランダムアクセス
my $n = int(<STDIN>);
my @A = map { int($_) } split ' ', <STDIN>;
my $q = int(<STDIN>);
my @B = map { int($_) - 1 } split ' ', <STDIN>;
for $b (@B) {
	print "$A[$b]$/";
}
Python3
ランダムアクセス
n, m = map(int, input().split())
m -= 1
A = list(map(int, input().split()))
print(A[m])
複数回のランダムアクセス
n = int(input())
A = list(map(int, input().split()))
q = int(input())
B = list(map(lambda x : int(x)-1, input().split()))
for b in B:
	print(A[b])
Ruby
ランダムアクセス
N, m = gets.split.map(&:to_i)
m -= 1
A = gets.split.map(&:to_i)
p A[m]
複数回のランダムアクセス
N = gets.to_i
A = gets.split.map(&:to_i)
Q = gets.to_i
B = gets.split.map { |x| x.to_i - 1 }
B.each do |b|
	p A[b]
end
Scala
ランダムアクセス
import scala.io.StdIn._

object Main extends App{
	val Array(n, m) = readLine().split(' ').map { _.toInt }
	val A = readLine().split(' ').map { _.toInt }
	println(A(m-1))
}
複数回のランダムアクセス
import scala.io.StdIn._

object Main extends App{
	val n = readInt()
	val A = readLine().split(' ').map { _.toInt }
	val q = readInt()
	val B = readLine().split(' ').map { _.toInt - 1 }
	for (b <- B) println(A(b))
}
Swift
ランダムアクセス
let nm = readLine()!.split(separator: " ").compactMap { Int($0) }
let m = nm[1] - 1
let A = readLine()!.split(separator: " ").compactMap { Int($0) }
print(A[m])
複数回のランダムアクセス
let n = Int(readLine()!)!
let A = readLine()!.split(separator: " ").compactMap { Int($0) }
let q = Int(readLine()!)!
let B = readLine()!.split(separator: " ").map { Int($0)! - 1 }
for b in B {
	print(A[b])
}
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