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index.html
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<html>
<head>
<style>
html, body {
height: 100%;
margin: 0;
}
.grid2x2 {
min-height: 600px;
width:810px;
display: flex;
flex-wrap: wrap;
flex-direction: row;
}
.buttonHighlight
{
float: left;
width: 100px;
background-color: #ccc;
margin: 10px;
border: 8px solid green;
}
.button
{
float: left;
width: 100px;
background-color: #ccc;
margin: 10px;
border: 8px solid #ccc;
}
.grid2x2 > div {
display: flex;
flex-basis: calc(50% - 160px);
justify-content: center;
}
input
{
width: 100px;
font-size: 40px;
background-color: #bbb;
outline: none;
border: none;
margin-top: 180px;
}
.target
{
margin-left: 20px;
margin-top: 10px;
}
input[type=number]
{
-moz-appearance: textfield;
}
.box
{
background-color: #aaaaaa;
margin: 20px;
}
span
{
font-size: 40px;
margin-left: 20px;
}
button
{
background-color: #ccc;
border: none;
font-size: 40px;
margin-left: 50px;
}
button:hover
{
background-color: #ddd;
}
</style>
<script>
function find_solution(input_values, target) {
let possible_values = [0];
let possible_seq = [[]];
for (let j = 0; j < input_values.length; j++) {
let to_add = [];
let to_add_seq = [];
for (let i = 0; i < possible_values.length; i++) {
let value = possible_values[i] + input_values[j];
if (value <= target) {
to_add.push(value);
to_add_seq.push([...possible_seq[i], j]);
}
}
possible_values = possible_values.concat(to_add);
possible_seq = possible_seq.concat(to_add_seq);
}
let indexes = [];
for (let i = 0; i < possible_values.length; i++) {
if (possible_values[i] == target) {
indexes.push(i);
}
}
let index = -1;
if (indexes.length > 1) {
let
min = possible_seq[indexes[0]].length,
min_index = 0;
for (let i = 1; i < indexes.length; i++) {
if (possible_seq[indexes[i]].length < min) {
min = possible_seq[indexes[i]].length;
min_index = i;
}
}
index = indexes[min_index];
} else if (indexes.length == 1) {
index = indexes[0];
}
if (index == -1) {
console.log("Not found");
return [];
} else {
console.log("Found value " + target.toString());
console.log(
"Sequence to use: " + possible_seq[index].toString()
);
return possible_seq[index];
}
}
function load_values_from_inputs(ids) {
let values = [];
ids.forEach((el) => {
values.push(parseInt(document.getElementById(el).value));
});
return values;
}
function main() {
let target_id = "target";
let ids = [
"input1",
"input2",
"input3",
"input4",
"input5",
"input6",
"input7",
"input8",
];
console.log(load_values_from_inputs(ids));
console.log(document.getElementById(target_id).value);
solution_ids = find_solution(
load_values_from_inputs(ids),
parseInt(document.getElementById(target_id).value)
);
for (let i = 0; i < ids.length; i++) {
var parent_div = document.getElementById(ids[i]).parentElement;
parent_div.className = "button";
}
if (solution_ids.length > 0) {
solution_ids.forEach((ind) => {
var parent_div =
document.getElementById(ids[ind]).parentElement;
parent_div.className = "buttonHighlight";
});
}
}
</script>
</head>
<body>
<h3>kalkulator</h3>
<div class="grid2x2">
<div class="box">
<div class="button"><input type="number" id="input1" value=6></input></div>
<div class="button"><input type="number" id="input2" value=61></input></div>
</div>
<div class="box">
<div class="button"><input type="number" id="input3" value=67></input></div>
<div class="button"><input type="number" id="input4" value=71></input></div>
</div>
<div class="box">
<div class="button"><input type="number" id="input5" value=73></input></div>
<div class="button"><input type="number" id="input6" value=77></input></div>
</div>
<div class="box">
<div class="button"><input type="number" id="input7" value=89></input></div>
<div class="button"><input type="number" id="input8" value=97></input></div>
</div>
</div>
<span>Target: </span>
<input type="number" class="target" id="target" />
<button onclick="main()">Generate</button>
</body>
</html>