大差法：流水步距计算工期
大差法：流水步距计算工期
纯前端 + javascript，实现大差法
异节奏流水施工：异节奏流水施工就是每个施工过程的流水步距都不相等，且每个施工段上的流水节拍也不相等。
大差法公式：T=T1+(n－1)K。
式中T为施工总工期;T1为一个施工段或一个单位工程的工期；n为施工段或单位工程的数目；K为流水步距。
即“累加数列、错位相减、取大差”。
第一步：累加
第二步：错位相减、取大差
第三步：计算工期
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<base href="<%=basePath%>">
<title>testtitle>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<style type="text/css">
.right {
margin: 0% 10%;
width: 600px;
}
.right table {
background: white;
width: 100%;
border: 1px solid #499B33;
}
.right td {
background: blue;
text-align: center;
padding: 2px;
border: 1px solid #499B33;
}
.right td {
background: #8FBC8F;
}
.item {
text-align: center;
width: 100px;
}
.assigned {
border: 1px solid #BC2A4D;
}
style>
<script>
// 全局变量
var tList = [];
var hljList = [];
var maxList = [];
//
function table() {
if (document.getElementById("Col").value == "" || document.getElementById("Col").value.search("^[0-9]*$") ==
-1) {
document.getElementById("errmsg1").style.display = "block"; //判断payNum是否为空或不是数字 提示错误
document.getElementById("errmsg1").innerHTML = "提示信息：列数数为空或不是数字！";
return;
}
if (document.getElementById("Num").value == "" || document.getElementById("Num").value.search("^[0-9]*$") ==
-1) {
document.getElementById("errmsg1").style.display = "block"; //判断payNum是否为空或不是数字 提示错误
document.getElementById("errmsg1").innerHTML = "提示信息：行数为空或不是数字！";
return;
} else {
document.getElementById("errmsg1").style.display = "none"; //隐藏提示信息
var Col = parseInt(document.getElementById("Col").value); //获取列数
var Num = parseInt(document.getElementById("Num").value); //获取行数
var flag = true;
var data = "";
data += " ";
data += " ";
for (var j = 0; j <= Col; j++) {
if (j == 0) {
data += "分项 ";
} else {
data += "数据" + j + " ";
}
}
data += " ";
//
for (var i = 1; i <= Num; i++) {
data += "";
for (var j = 0; j <= Col; j++) {
if (j == 0) {
data += "分类" + i + " ";
} else {
data += " ";
}
data += "
";
document.getElementById("div1").style.display = "block";
document.getElementById("table1").innerHTML = data;
}
}
function cumulativeSummation() {
// var pElement = document.getElementById("div1");
// var childList = getElementsByClassName(pElement, "dataInput");
//
var Col = parseInt(document.getElementById("Col").value); //获取列数
var Num = parseInt(document.getElementById("Num").value); //获取行数
tList = [];
for (var i = 1; i <= Num; i++) {
var tArray = [];
for (var j = 1; j <= Col; j++) {
var tValue = Number(document.getElementById('rc_' + i + "_" + j).value);
tArray.push(tValue);
}
tList.push(tArray);
}
//
hljList = [];
for (var i = 0; i < tList.length; i++) {
var hljArray = [];
for (var j = 0; j < tList[i].length; j++) {
var tijList = tList[i].slice(0, j + 1);
var hangleijia = arraySum(tijList);
hljArray.push(hangleijia);
}
hljList.push(hljArray);
}
//
var divHtml = "";
for (var i = 0; i < hljList.length; i++) {
divHtml += "";
divHtml += "分类" + (i + 1) + "：（累加求和）";
for (var j = 0; j < hljList[i].length; j++) {
divHtml += "" + hljList[i][j] + "";
}
divHtml += "";
}
document.getElementById("div2").innerHTML = divHtml;
}
function dislocationSubtraction() {
var hljList_new_str = JSON.stringify(hljList);
var hljList_new = JSON.parse(hljList_new_str);
//
var divHtml = "";
for (var i = 0; i < hljList_new.length - 1; i++) {
//
var maxArray = [];
//
hljList_new[i].push(0);
hljList_new[i + 1].unshift(0);
divHtml += "";
divHtml += "分类" + (i + 1) + " - 分类" + (i + 2) + "：";
for (var j = 0; j < hljList_new[i].length; j++) {
var j_j = hljList_new[i][j] - hljList_new[i + 1][j]
maxArray.push(j_j);
divHtml += "" + j_j + "";
}
var max_j_j = Math.max.apply(null, maxArray);
maxList.push(max_j_j);
divHtml += "最大值：" + max_j_j + "";
divHtml += "";
//
if (i == hljList_new.length - 2) {
//
} else {
hljList_new[i + 1].splice(0, 1);
}
}
document.getElementById("div3").innerHTML = divHtml;
}
function calculateConstructionPeriod() {
var divHtml = "";
divHtml += "（";
for (let i = 0; i < maxList.length; i++) {
if(i == maxList.length - 1){
divHtml += "" + maxList[i] + "";
} else {
divHtml += "" + maxList[i] + " + " + "";
}
}
divHtml += "）+";
//
divHtml += "（";
for (let i = 0; i < tList[tList.length - 1].length; i++) {
if(i == tList[tList.length - 1].length - 1){
divHtml += "" + tList[tList.length - 1][i] + "";
} else {
divHtml += "" + tList[tList.length - 1][i] + " + " + "";
}
}
divHtml += "）";
divHtml += "" + " = " + "";
//
var max1 = arraySum(maxList);
var max2 = arraySum(tList[tList.length - 1]);
var max3 = max1 + max2;
//
divHtml += "" + max3 + "";
document.getElementById("div4").innerHTML = divHtml;
}
function getElementsByClassName(node, classname) {
if (node.getElementsByClassName) {
return node.getElementsByClassName(classname);
} else {
var results = new Array();
var elems = node.getElementsByTag("*");
for (var i = 0; i < elems.length; i++) {
if (elems[i].className.indexOf(classname) != -1) {
results[elems.length] = elems[i];
}
}
return results;
}
}
function arraySum(arr) {
var s = 0;
for (var i = arr.length - 1; i >= 0; i--) {
s += arr[i];
}
return s;
}
script>
head>
<body>
<br>
<div style="width:750px;">
<div class="right">
<table>
<tr>
<td>动态生成表格td>
<td><input id="Col" type="text" class="input" size="10" name="Col" />列td>
<td><input id="Num" type="text" class="input" size="10" name="Num" />行td>
tr>
table>
br>
<input name="" type="button" value="生成" class="buttton" onclick="table()" />br>
br>
<div id="div1" style="display: none" mce_style="display: none">
<div id="table1">div>
div>
br>
<input name="" type="button" value="第一步：累加求和" class="buttton" onclick="cumulativeSummation()" />br>
br>
<div id="div2">div>
br>
<input name="" type="button" value="第二步：两两错位相减取最大值" class="buttton"
onclick="dislocationSubtraction()" />br>
br>
<div id="div3">div>
br>
<input name="" type="button" value="第三步：计算工期（第二步的最大值累加 + 最后一行原始数值的累加）" class="buttton"
onclick="calculateConstructionPeriod()" />br>
br>
<div id="div4">div>
br>
<div id="errmsg1" class="formmsg">div>
div>
div>
body>
html>
源代码：https://download.csdn.net/download/liuliwei09/25635306