Merge pull request youngyangyang04#2869 from aPurpleBerry/feature_aPurpleBerry

添加 背包问题理论基础完全背包.md JavaScript版本

Author: youngyangyang04

problems/背包问题理论基础完全背包.md

@@ -316,7 +316,51 @@ print(knapsack(n, bag_weight, weight, value))
 
 ### JavaScript
 
+```js
+const readline = require('readline').createInterface({
+    input: process.stdin,
+    output: process.stdout
+});
+
+let input = [];
+readline.on('line', (line) => {
+    input.push(line.trim());
+});
+
+readline.on('close', () => {
+    // 第一行解析 n 和 v
+    const [n, bagweight] = input[0].split(' ').map(Number);
+    
+    /// 剩余 n 行解析重量和价值
+    const weight = [];
+    const value = [];
+    for (let i = 1; i <= n; i++) {
+        const [wi, vi] = input[i].split(' ').map(Number);
+        weight.push(wi);
+        value.push(vi);
+    }
+
+    
+    let dp = Array.from({ length: n }, () => Array(bagweight + 1).fill(0));
+
+    for (let j = weight[0]; j <= bagweight; j++) {
+        dp[0][j] = dp[0][j-weight[0]] + value[0];
+    }
+
+    for (let i = 1; i < n; i++) {
+        for (let j = 0; j <= bagweight; j++) {
+            if (j < weight[i]) {
+                dp[i][j] = dp[i - 1][j];
+            } else {
+                dp[i][j] = Math.max(dp[i - 1][j], dp[i][j - weight[i]] + value[i]);
+            }
+        }
+    }
 
+    console.log(dp[n - 1][bagweight]);
+});
+
+```
 
 <p align="center">
 <a href="https://programmercarl.com/other/kstar.html" target="_blank">