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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

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`‎problems/背包问题理论基础完全背包.md‎`

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Original file line number	Diff line number	Diff line change
`@@ -316,7 +316,51 @@ print(knapsack(n, bag_weight, weight, value))`
`316`	`316`
`317`	`317`	`### JavaScript`
`318`	`318`
	`319`	+```js
	`320`	`+const readline = require('readline').createInterface({`
	`321`	`+ input: process.stdin,`
	`322`	`+ output: process.stdout`
	`323`	`+});`
	`324`	`+`
	`325`	`+let input = [];`
	`326`	`+readline.on('line', (line) => {`
	`327`	`+ input.push(line.trim());`
	`328`	`+});`
	`329`	`+`
	`330`	`+readline.on('close', () => {`
	`331`	`+ // 第一行解析 n 和 v`
	`332`	`+ const [n, bagweight] = input[0].split(' ').map(Number);`
	`333`	`+`
	`334`	`+ /// 剩余 n 行解析重量和价值`
	`335`	`+ const weight = [];`
	`336`	`+ const value = [];`
	`337`	`+ for (let i = 1; i <= n; i++) {`
	`338`	`+ const [wi, vi] = input[i].split(' ').map(Number);`
	`339`	`+ weight.push(wi);`
	`340`	`+ value.push(vi);`
	`341`	`+ }`
	`342`	`+`
	`343`	`+`
	`344`	`+ let dp = Array.from({ length: n }, () => Array(bagweight + 1).fill(0));`
	`345`	`+`
	`346`	`+ for (let j = weight[0]; j <= bagweight; j++) {`
	`347`	`+ dp[0][j] = dp[0][j-weight[0]] + value[0];`
	`348`	`+ }`
	`349`	`+`
	`350`	`+ for (let i = 1; i < n; i++) {`
	`351`	`+ for (let j = 0; j <= bagweight; j++) {`
	`352`	`+ if (j < weight[i]) {`
	`353`	`+ dp[i][j] = dp[i - 1][j];`
	`354`	`+ } else {`
	`355`	`+ dp[i][j] = Math.max(dp[i - 1][j], dp[i][j - weight[i]] + value[i]);`
	`356`	`+ }`
	`357`	`+ }`
	`358`	`+ }`
`319`	`359`
	`360`	`+ console.log(dp[n - 1][bagweight]);`
	`361`	`+});`
	`362`	`+`
	`363`	+```
`320`	`364`
`321`	`365`	`<p align="center">`
`322`	`366`	`<a href="https://programmercarl.com/other/kstar.html" target="_blank">`

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