algorithm/3.html at main · Orekrigo/algorithm · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>算法实验三</title>
    <style>
        * {
            padding: 0;
            margin: 0;
        }

        body {
            width: 100%;
            height: 100%;
            background-image: url("image/jianyue.jpeg");
            background-size: 100% 100%;
            background-repeat: no-repeat;
            background-attachment: fixed;
        }

        .first-container {
            padding-left: 400px;
            padding-top: 200px;
            font-size: large;
        }

        .first-container input {
            margin-bottom: 20px;
            border-radius: 5px;
            font-size: 30px;
        }

        .first-container div {
            color: white;
            font-size: 25px;
            border-bottom: 1px solid blue;
        }

        .first-container button {
            font-size: 25px;
            border-radius: 5px;
            background-color: green;
            cursor: pointer;
        }

        .second-container {
            padding-left: 400px;
            padding-top: 200px;
            font-size: large;
        }

        .second-container input {
            margin-bottom: 20px;
            border-radius: 5px;
            font-size: 30px;
        }

        .second-container div {
            color: white;
            font-size: 25px;
            border-bottom: 1px solid blue;
        }

        .second-container button {
            font-size: 25px;
            border-radius: 5px;
            background-color: green;
            cursor: pointer;
        }

        .second-container #ccc {
            padding-left: 20px;
        }

        table {
            border-collapse: collapse;
            margin: 100px auto;
        }

        th,
        td {
            padding: 10px;
            border: 1px solid #ccc;
            text-align: center;
        }
    </style>
</head>

<body>
    <div class="container">
        <div class="first-container">
            <input id="firstnum3" type="text" placeholder="请在这里输入背包容积">
            <input id="firstnum1" type="text" placeholder="请在这里输入values">
            <input id="firstnum2" type="text" placeholder="请在这里输入weights">
            <button onclick="firstclick()">确定</button>
            <div>排序后价值：<span id="res4"></span></div>
            <div>排序后重量：<span id="res5"></span></div>
            <div>装入价值：<span id="res1"></span></div>
            <div>装入重量：<span id="res2"></span></div>
            <div>装入总价值：<span id="res3"></span></div>
        </div>
        <div class="second-container">
            <input id="secondnum1" type="text" placeholder="请在这里输入活动个数">
            <input id="secondnum2" type="text" placeholder="请在这里输入活动开始时间">
            <input id="secondnum3" type="text" placeholder="请在这里输入活动结束时间">
            <button onclick="secondclick()">确定</button>
            <div>排序后活动：<div id="res6"></div>
            </div>
            <div>选取活动个数：<span id="res7"></span></div>
            <div>选取活动情况：<div id="res8"></div>
            </div>
        </div>
    </div>
    <script>
        var finalValue = [];
        var finalWeight = [];
        var sortedValue = [];
        var sortedWeight = [];
        function greedy(values, weights, capacity) {
            var returnValue = 0;
            var remainCapacity = capacity;
            var sortArray = [];
            values.map((cur, index) => {
                sortArray.push({
                    'value': values[index],
                    'weight': weights[index],
                    'ratio': values[index] / weights[index]
                })
            })
            sortArray.sort(function (a, b) {
                return b.ratio - a.ratio;
            })
            sortArray.forEach((res) => {
                sortedValue.push(res.value);
                sortedWeight.push(res.weight)
            })
            sortArray.map((cur, index) => {
                if (remainCapacity == 0) return returnValue;
                if (remainCapacity >= cur.weight) {
                    remainCapacity -= cur.weight;
                    returnValue += cur.value;

                    finalValue.push(cur.value);
                    finalWeight.push(cur.weight);
                }
                else {
                    returnValue += cur.ratio * remainCapacity;

                    finalValue.push(cur.ratio * remainCapacity);
                    finalWeight.push(remainCapacity);

                    remainCapacity = 0;
                }
            })
            return returnValue
        }
        // var values =  50 220 60 60
        // var weights =  5 20 12 10
        // var capacity = 32 //背包容积
        //11
        //6 8 8 2 12 5 3 5 0 3 1
        //10 11 12 13 14 9 5 7 6 8 4

        function firstclick() {
            var res1 = document.getElementById('res1');
            var res2 = document.getElementById('res2');
            var res3 = document.getElementById('res3');
            var res4 = document.getElementById('res4');
            var res5 = document.getElementById('res5');
            var num1 = document.getElementById('firstnum1');
            var num2 = document.getElementById('firstnum2');
            var num3 = document.getElementById('firstnum3');
            num1 = num1.value;
            num1 = num1.split(" ");
            num2 = num2.value;
            num2 = num2.split(" ");
            num3 = parseInt(num3.value);
            var nums1 = [];
            var nums2 = [];
            for (let i = 0; i < num1.length; i++) {
                nums1.push(parseInt(num1[i]));
                nums2.push(parseInt(num2[i]));
            }
            var result1 = greedy(nums1, nums2, num3)
            res1.innerText = finalValue;
            res2.innerText = finalWeight;
            res3.innerText = result1;
            res4.innerText = sortedValue;
            res5.innerText = sortedWeight;
        }


        function sort(s, f) {
            f.forEach((res1, index1) => {
                f.forEach((res2, index2) => {
                    if (res1 < res2) {
                        [f[index1], f[index2]] = [f[index2], f[index1]];
                        [s[index1], s[index2]] = [s[index2], s[index1]];
                    }
                })
            })
        }
        var A = [];
        function activityArrange(n, s, f) {
            var k = 0;
            A[k] = 0;
            var j = 0, count = 1;
            for (let i = 1; i < n; i++) {
                if (s[i] >= f[j]) {
                    A[++k] = i;
                    j = i;
                    count++;
                }
            }
            return count;
        }

        function secondclick() {
            var res6 = document.getElementById('res6');
            var res7 = document.getElementById('res7');
            var res8 = document.getElementById('res8');
            var num1 = document.getElementById('secondnum1');
            var num2 = document.getElementById('secondnum2');
            var num3 = document.getElementById('secondnum3');
            var table1 = document.createElement('table');
            var table2 = document.createElement('table');
            res6.appendChild(table1);
            res8.appendChild(table2);
            num1 = parseInt(num1.value);
            num2 = num2.value;
            num2 = num2.split(" ");
            num3 = num3.value;
            num3 = num3.split(" ");
            nums1 = [];
            nums2 = [];
            for (let i = 0; i < num2.length; i++) {
                nums1.push(parseInt(num2[i]));
                nums2.push(parseInt(num3[i]));
            }
            sort(nums1, nums2);
            var result2 = activityArrange(num1, nums1, nums2);
            var nums3 = [];
            var nums4 = [];
            nums3.push('开始时间si');
            nums4.push('结束时间fi');
            for (let i = 0; i < A.length; i++) {
                nums3.push(nums1[A[i]]);
                nums4.push(nums2[A[i]]);
            }
            nums1.unshift('开始时间si');
            nums2.unshift('结束时间fi');
            let numm1 = ['活动i'];
            for (let i = 0; i < nums1.length; i++) {
                numm1.push(i+1);
            }
            for (let i = 0; i < nums1.length; i++) {
                let th1 = document.createElement('th');
                th1.innerHTML = `${numm1[i]}`
                table1.appendChild(th1);
            }
            let tr1 = document.createElement('tr');
            for (let i = 0; i < nums1.length; i++) {
                let td1 = document.createElement('td');
                td1.innerHTML = `${nums1[i]}`
                tr1.appendChild(td1);
            }
            table1.appendChild(tr1);
            let tr2 = document.createElement('tr');
            for (let i = 0; i < nums1.length; i++) {
                let td2 = document.createElement('td');
                td2.innerHTML = `${nums2[i]}`
                tr2.appendChild(td2);
            }
            table1.appendChild(tr2);
            res7.innerText = result2;
            let numm2 = ['活动i'];
            for (let i = 0; i < nums3.length; i++) {
                numm2.push(i+1);
            }
            for (let i = 0; i < nums3.length; i++) {
                let th2 = document.createElement('th');
                th2.innerHTML = `${numm2[i]}`
                table2.appendChild(th2);
            }
            let tr3 = document.createElement('tr');
            for (let i = 0; i < nums3.length; i++) {
                let td3 = document.createElement('td');
                td3.innerHTML = `${nums3[i]}`
                tr3.appendChild(td3);
            }
            table2.appendChild(tr3);
            let tr4 = document.createElement('tr');
            for (let i = 0; i < nums3.length; i++) {
                let td4 = document.createElement('td');
                td4.innerHTML = `${nums4[i]}`
                tr4.appendChild(td4);
            }
            table2.appendChild(tr4);
        }


    </script>
</body>

</html>