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算术题生成器
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@JiYouMCC
JiYouMCC authored Aug 27, 2024
1 parent 3a3d3fa commit e9535f8
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46 changes: 26 additions & 20 deletions _posts/2024-08-23-107.markdown
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Expand Up @@ -26,22 +26,26 @@ issue: 45
<div class="alert alert-warning" role="alert">为了保证出的题目不重复，这里数字不要填太大，不然会随机不出来。对于加法来说，不考虑和不超过某个数字，最大值是P(N,2)，对于减法来说是C(N,2),乘法除法需要根据积的最大值来遍历</div>
</div>
<div class="form-group">
<label for="input_max_int" class="col-sm-2 control-label">运算最大数</label>
<label class="col-sm-2 control-label">运算数范围</label>
<div class="input-group col-sm-10">
<input id="input_max_int" type="number" value="10" step="1" min="1" class="form-control">
<input id="input_min_int" type="number" value="1" step="1" class="form-control">
<span class="input-group-addon">~</span>
<input id="input_max_int" type="number" value="10" step="1" class="form-control">
</div>
<div class="alert alert-warning" role="alert">加数/减数/被减数/乘数/被乘数/除数/被除数的最大值。</div>
<div class="alert alert-warning" role="alert">加数/减数/被减数/乘数/被乘数/除数/被除数的最小值和最大值。</div>
</div>
<div class="form-group">
<label for="input_max_result" class="col-sm-2 control-label">结果最大数</label>
<label class="col-sm-2 control-label">结果范围</label>
<div class="input-group col-sm-10">
<input id="input_max_result" type="number" value="10" step="1" min="1" class="form-control">
<input id="input_min_result" type="number" value="1" step="1" class="form-control">
<span class="input-group-addon">~</span>
<input id="input_max_result" type="number" value="10" step="1" class="form-control">
</div>
<div class="alert alert-warning" role="alert">和/差/积/商最大值。</div>
<div class="alert alert-warning" role="alert">和/差/积/商的最大值和最小值。</div>
</div>
<div class="text-center">
<input id="check_plus" type="checkbox" checked> 加
<input id="check_minus" type="checkbox" checked> 减（差会控制为必须大于0）
<input id="check_minus" type="checkbox" checked> 减
<input id="check_times" type="checkbox"> 乘
<input id="check_divide" type="checkbox" > 除（商会控制为必须是整数）
</div>
Expand All @@ -60,17 +64,17 @@ issue: 45
<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js"></script>
<script type="text/javascript">
var problems = [];
function random_int(max) {
var min = 1;
return Math.floor(Math.random() * (max - min + 1)) + min;
function random_int(min, max) {
return Math.floor(Math.random() * (max - min + 1)) + Number(min);
}
function createPaper(max_int, max_answer, count, operators) {
function createPaper(min_int, max_int, min_answer, max_answer, count, operators) {
var problems = [];
for (var i = count - 1; i >= 0;) {
var number_A = random_int(max_int);
var number_B = random_int(max_int);
var number_A = random_int(min_int, max_int);
var number_B = random_int(min_int, max_int);
var operator = operators[Math.floor(Math.random() * operators.length)];
var flag=false;
//console.log(number_A,operator,number_B);
var flag = false;
for (var j = problems.length - 1; j >= 0; j--) {
if (problems[j][0] == number_A && problems[j][1] == operator && problems[j][2] == number_B) {
//console.log("重复题目");
Expand All @@ -82,8 +86,8 @@ issue: 45
continue;
}

var result = eval(number_A + operator + number_B)
if (result > 0 && result <= max_answer && Number.isInteger(result)) {
var result = eval(number_A + operator + "(" + number_B + ")")
if (result >= min_answer && result <= max_answer && Number.isInteger(result)) {
problems.push([number_A,operator,number_B,result])
i--;
}
Expand All @@ -93,7 +97,9 @@ issue: 45
function generate() {
var count = document.getElementById("input_problem_count").value;
var max_int = document.getElementById("input_max_int").value;
var result_int = document.getElementById("input_max_result").value;
var min_int = document.getElementById("input_min_int").value;
var max_result = document.getElementById("input_max_result").value;
var min_result = document.getElementById("input_min_result").value;
var operator = [];
if (document.getElementById("check_plus").checked) {
operator.push("+")
Expand All @@ -111,7 +117,7 @@ issue: 45
alert("必须选择一种运算")
return;
}
problems = createPaper(max_int,result_int,count,operator)
problems = createPaper(min_int, max_int, min_result, max_result, count,operator)
printToDiv(problems)
}

Expand All @@ -138,7 +144,7 @@ issue: 45
if (operator == "/") {
operator = "÷"
}
let newText = document.createTextNode(problems[pro_index][0] + " " +operator + " " +problems[pro_index][2] + " = "+problems[pro_index][3]);
let newText = document.createTextNode((problems[pro_index][0]>=0?"":" ( ") + problems[pro_index][0] + (problems[pro_index][0]>=0?" ":" ) ") + operator + (problems[pro_index][2]>=0?" ":" ( ") +problems[pro_index][2] + (problems[pro_index][2]>=0?" = ":" ) = ") + problems[pro_index][3]);

div_list[div_flag].appendChild(newText);
div_list[div_flag].appendChild(document.createElement("br"));
Expand Down Expand Up @@ -169,7 +175,7 @@ issue: 45
if (operator == "/") {
operator = "÷"
}
doc.text(problems[pro_index][0] + " " +operator + " " +problems[pro_index][2] + " =",x + 10,20+10*y)
doc.text((problems[pro_index][0]>=0?"":" ( ") + problems[pro_index][0] + (problems[pro_index][0]>=0?" ":" ) ") +operator + (problems[pro_index][2]>=0?" ":" ( ") +problems[pro_index][2] + (problems[pro_index][2]>=0?" = ":" ) = "),x + 10,20+10*y)
x+=70;
if (x >150) {
x =10;
Expand Down

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