19681 01背包

19681 01背包

⭐️难度：中等
🌟考点：动态规划、01背包
📖

📚

import java.util.Arrays;
import java.util.LinkedList;
import java.util.Queue;
import java.util.Scanner;

public class Main {
    static int N = 100010;
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();
        int m = sc.nextInt();
        int[] v = new int[1002];
        int[] w = new int[1002];
        int[] dp = new int[1002];

        for (int i = 1; i <= n; i++) {
            v[i] = sc.nextInt();
            w[i] = sc.nextInt();
        }

        // dp
        for (int i = 1; i <= n; i++) {
            for (int j = m; j >= v[i]; j--) {
                dp[j] = Math.max(dp[j],dp[j - v[i]] + w[i]);
            }
        }
        System.out.println(dp[m]);
    }
}

🍎笔记

二维数组做法

一维数组做法