gistfile1.html

<div class="box">
    <div style="min-height: 73px;" class="cell">
        <h1>
            24点在线解答
        </h1>
        <div class="sep20">
        </div>
        <table height="600" cellspacing="0" cellpadding="0" border="0" align="center"
        width="600" class="mbody">
            <tbody>
                <tr>
                    <td>
                    </td>
                    <td width="579" valign="top" rowspan="2">
                        <form onsubmit="return valid(this)" id="breast">
                            请输入四个整数：
                            <br>
                            <input class="sls" size="5" name="a1" maxlength="6">
                            <input class="sls" size="5" name="a2" maxlength="6">
                            <input class="sls" size="5" name="a4" maxlength="6">
                            <input class="sls" size="5" name="a8" maxlength="6">
                            <select style="display:none" name="count1">
                                <option value="1">
                                    只找一个答案
                                </option>
                                <option value="5">
                                    最多找5个
                                </option>
                                <option value="10">
                                    最多找10个
                                </option>
                                <option value="0" selected="">
                                    找全部答案
                                </option>
                            </select>
                            <div class="sep10"></div>
                            <input class="super normal button" type="submit" value="开始计算24点" name="submit">
                            <br>
                            <br>
                            &nbsp; 计算结果：&nbsp;&nbsp;&nbsp;
                            <br>
                            <textarea class="mll tall" rows="15" name="text" cols="30">
                            </textarea>
                        </form>
                        <div class="sep10"></div>
                        <form>
                            <input class="super normal button" type="submit" value="清除输入" oonclick="clean()"
                            name="提交">
                        </form>
            </tbody>
        </table>
        <script language=javascript>
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                this[1] = f1;
                this[2] = f2;
                this[3] = f3;
            }
            disoper = new tdisoper("-", "+", "/", "*");
            function oper(f, m, n) {
                if (f == 3) return (m * n);
                if (f == 2) return (m / n);
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                    alert("必须输入整数！");
                    F.a2.focus();
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                    alert("必须输入整数！");
                    F.a4.focus();
                    return (false);
                }
                if (isNaN(F.a8.value)) {
                    alert("必须输入整数！");
                    F.a8.focus();
                    return (false);
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                F.text.value = "";
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                    if ((i1 | i2 | i3 | i4) != 0xf) continue;
                    for (f1 = 0; f1 <= 3; f1++) for (f2 = 0; f2 <= 3; f2++) for (f3 = 0; f3 <= 3; f3++) {
                        m = oper(f3, oper(f2, oper(f1, b[i1], b[i2]), b[i3]), b[i4]);
                        if (Math.abs(m - 24) < 1e-5) {
                            F.text.value = F.text.value + "((" + b[i1] + disoper[f1] + b[i2] + ")" + disoper[f2] + b[i3] + ")" + disoper[f3] + b[i4] + "\n";
                            if ((n != 0) && (++k >= n)) return (false);
                        }
                        m = oper(f1, b[i1], oper(f3, oper(f2, b[i2], b[i3]), b[i4]));
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                            F.text.value = F.text.value + b[i1] + disoper[f1] + "((" + b[i2] + disoper[f2] + b[i3] + ")" + disoper[f3] + b[i4] + ")\n";
                            if ((n != 0) && (++k >= n)) return (false);
                        }
                        m = oper(f3, oper(f1, b[i1], oper(f2, b[i2], b[i3])), b[i4]);
                        if (Math.abs(m - 24) < 1e-5) {
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                            if ((n != 0) && (++k >= n)) return (false);
                        }
                        m = oper(f1, b[i1], oper(f2, b[i2], oper(f3, b[i3], b[i4])));
                        if (Math.abs(m - 24) < 1e-5) {
                            F.text.value = F.text.value + b[i1] + disoper[f1] + "(" + b[i2] + disoper[f2] + "(" + b[i3] + disoper[f3] + b[i4] + "))\n";
                            if ((n != 0) && (++k >= n)) return (false);
                        }
                        m = oper(f2, oper(f1, b[i1], b[i2]), oper(f3, b[i3], b[i4]));
                        if (Math.abs(m - 24) < 1e-5) {
                            F.text.value = F.text.value + "(" + b[i1] + disoper[f1] + b[i2] + ")" + disoper[f2] + "(" + b[i3] + disoper[f3] + b[i4] + ")\n";
                            if ((n != 0) && (++k >= n)) return (false);
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                    }
                }
                F.text.value = F.text.value + "----END----\n"
                return (false);
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</div>