# How to create a number generator from an Initial number and a Final number?

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Coding Problem :

I do not know if it is done in php or javascript, I have read tutorials but I could not get anywhere … I would like to create a system for me to put an initial number and an end and in that interval would have 20,000 numbers and that were generated random!

example:

85000 starting number

85659
Share on social network 85325

95000 final number

``````<form class="form-inline">
<div class="form-group">
<label for="inicial">Inicial</label>
<input type="number" class="form-control" id="inicial" placeholder="Número Inicial">
</div>
<div class="form-group">
<label for="final">Final</label>
<input type="number" class="form-control" id="final" placeholder="Número Final">
</div>
<button type="submit" class="btn btn-default">Iniciar</button>
</form>``````

asked by anonymous 16.07.2016 / 19:52

You can do this below using this `randomNumber` function in JavaScript:

``````function randomNumber(min, max) {
return Math.floor(((max + 1) - min) * Math.random() + min);
}

``````

Solution based on your HTML in JavaScript:

``````function randomNumber(min, max) {
return Math.floor( ((max + 1) - min) * Math.random() + min);
}

function gerarNumeros() {

var txtInicial = document.getElementById('inicial'),
txtFinal = document.getElementById('final'),
result = document.getElementById('result');

var numeroInicial = parseInt(txtInicial.value),
numeroFinal = parseInt(txtFinal.value);

var count = 0;

var intervalo = setInterval(function() {

//Gerando 20 números por vez.
for (var i = 0; i < 20/*20000*/; i++) {

result.innerHTML = result.innerHTML + '<p>' + count + ' : ' + numeroGerado + '</p>';

count++;

}

if (count === 20000) {//Quando o total de números gerados for 20000, parar de gerar.
clearInterval(intervalo);
}

}, 1000);//Gerar em 1 e 1 segundo.

}``````
``````p {
margin: 2px;
}``````
``````<form class="form-inline">
<div class="form-group">
<label for="inicial">Inicial</label>
<input type="number" class="form-control" id="inicial" placeholder="Número Inicial">
</div>
<div class="form-group">
<label for="final">Final</label>
<input type="number" class="form-control" id="final" placeholder="Número Final">
</div>
<button type="button" class="btn btn-default" onclick="gerarNumeros()">Iniciar</button>
</form>

<div id="result"></div>``````

Solution based on your HTML in PHP:

``````<?php

\$numeroInicial = 85325;//\$_GET['inicial'];
\$numeroFinal = 85659;//\$_GET['final'];

for (\$i = 0; \$i < 20000; \$i++) {
echo '<p>' . \$i . ' : ' . mt_rand(\$numeroInicial, \$numeroFinal) . '</p>';
}
``````

JS Solution

``````return Math.random() * (max - min) + min;
``````

PHP solution

``````rand( int \$min , int \$max )
``````

See the demo at JS:

``<button onclick="document.body.innerHTML += (Math.floor(Math.random() * ( 95000 - 85000 ) + 85000 ) + '<br>' );">Gerar</button><br>``