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Merge pull request youngyangyang04#2833 from namewyf/master

开发商购买土地解法 JavaScript版本

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problems/kamacoder
- 0044.开发商购买土地.md

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`‎problems/kamacoder/0044.开发商购买土地.md‎`

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`@@ -388,6 +388,62 @@ if __name__ == "__main__":`
`388`	`388`	`main()`
`389`	`389`
`390`	`390`	```
	`391`	`+`
	`392`	`+### JavaScript`
	`393`	`+`
	`394`	`+前缀和`
	`395`	+```js
	`396`	`+function func() {`
	`397`	`+ const readline = require('readline')`
	`398`	`+ const rl = readline.createInterface({`
	`399`	`+ input: process.stdin,`
	`400`	`+ output: process.stdout`
	`401`	`+ })`
	`402`	`+ let inputLines = []`
	`403`	`+ rl.on('line', function (line) {`
	`404`	`+ inputLines.push(line.trim())`
	`405`	`+ })`
	`406`	`+`
	`407`	`+ rl.on('close', function () {`
	`408`	`+ let [n, m] = inputLines[0].split(" ").map(Number)`
	`409`	`+ let c = new Array(n).fill(0)`
	`410`	`+ let r = new Array(m).fill(0)`
	`411`	`+ let arr = new Array(n)`
	`412`	`+ let sum = 0//数组总和`
	`413`	`+ let min = Infinity//设置最小值的初始值为无限大`
	`414`	`+ //定义数组`
	`415`	`+ for (let s = 0; s < n; s++) {`
	`416`	`+ arr[s] = inputLines[s + 1].split(" ").map(Number)`
	`417`	`+ }`
	`418`	`+ //每一行的和`
	`419`	`+ for (let i = 0; i < n; i++) {`
	`420`	`+ for (let j = 0; j < m; j++) {`
	`421`	`+ c[i] += arr[i][j]`
	`422`	`+ sum += arr[i][j]`
	`423`	`+ }`
	`424`	`+ }`
	`425`	`+ //每一列的和`
	`426`	`+ for (let i = 0; i < n; i++) {`
	`427`	`+ for (let j = 0; j < m; j++) {`
	`428`	`+ r[j] += arr[i][j]`
	`429`	`+ }`
	`430`	`+ }`
	`431`	`+ let sum1 = 0, sum2 = 0`
	`432`	`+ //横向切割`
	`433`	`+ for (let i = 0; i < n; i++) {`
	`434`	`+ sum1 += c[i]`
	`435`	`+ min = min < Math.abs(sum - 2 * sum1) ? min : Math.abs(sum - 2 * sum1)`
	`436`	`+ }`
	`437`	`+ //纵向切割`
	`438`	`+ for (let j = 0; j < m; j++) {`
	`439`	`+ sum2 += r[j]`
	`440`	`+ min = min < Math.abs(sum - 2 * sum2) ? min : Math.abs(sum - 2 * sum2)`
	`441`	`+ }`
	`442`	`+ console.log(min);`
	`443`	`+ })`
	`444`	`+}`
	`445`	+```
	`446`	`+`
`391`	`447`	`### C`
`392`	`448`
`393`	`449`	`前缀和`

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