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Javascript Write a program to generate random numbers between a user-specified range, then count and display...

Javascript

Write a program to generate random numbers between a user-specified range, then count and display the frequencies of the most / least appeared numbers.
Sample Output
How many random numbers? 1000000
Enter the minimum number: 100
Enter the maximum number: 200
Generated 1000000 random numbers between 100 (inclusive) and 200 (exclusive).
Number 133 has the most occurrences (10197).
Number 154 has the least occurrences (9749).

engineering   Computer-Science   
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Homework Answers

Answer #1

HTML CODE:

<!DOCTYPE html>
<html>
<head>
   <title>Random Numbers</title>
</head>
<body>
   <h1 id="text">Genarating Random Numbers</h1>
   How many random numbers? <input type="text" id="total" ><br><br>
   Enter the minimum number: <input type="text" id="min" ><br><br>
   Enter the maximum number: <input type="text" id="max" ><br><br>
   <button id="cal">Count</button><br><br>
   <p id="m1"></p>
   <p id="m2"></p>
   <p id="m3"></p>
   <script type="text/javascript" src="ak.js"></script>
</body>
</html>

JAVA SCRIPT CODE:

function getRandomIntInclusive(min, max) {
min = Math.ceil(min);
max = Math.floor(max);
//GENARATING RANDOM NUMBER INBETWEEN INCLUSIVE RANGE
return Math.floor(Math.random() * (max - min + 1)) + min; //The maximum is inclusive and the minimum is inclusive
}

document.getElementById('cal').addEventListener('click',function(){
   var total=document.getElementById('total').value;
   var min=document.getElementById('min').value;
   var max=document.getElementById('max').value;
   //CONVERT TEXT VALUES INTO INTEGER VALUES
   total=parseInt(total, 10);
   min=parseInt(min, 10);
   max=parseInt(max, 10);
   var arr=[];
   //STORE EACH GENARATED VALUE TO THE ARRAY
   for(var i=0;i<total;i++){
       arr.push(getRandomIntInclusive(min, max));
   }
   var counts = {};
   //FIND THE OCCURENCES OF EACH NUMBER
   for (var i = 0; i < arr.length; i++) {
       var num = arr[i];
       counts[num] = counts[num] ? counts[num] + 1 : 1;
   }
   var m=arr.length;
   var M=0;
   var mi,ma;
   //FIND THE MOST AND LEAST OCCURENCE NUMBERS
   for (var val of Object.keys(counts)){
       if(counts[val]>M){
           M=counts[val];
           ma=val;
       }
       if(counts[val]<m){
           m=counts[val];
           mi=val;
       }
   }
   document.getElementById('m1').innerHTML="Generated "+total+" random numbers between "+min+" (inclusive) and "+max+" (inclusive)."
   document.getElementById('m2').innerHTML="Number "+ma+" has the most occurences ("+M+").";
   document.getElementById('m3').innerHTML="Number "+mi+" has the least occurences ("+m+").";
});

OUTPUTS:

AFTER CLICK COUNT

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