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In: Computer Science

JAVASCRIPT: Please create an array of student names and another array of student grades. - Create...

JAVASCRIPT:

Please create an array of student names and another array of student grades.
- Create a function that can put a name and a grade to the arrays.
- Keep Read student name and grade until student name is “???”. And save the reading by using a function
- Create another function to show all the grade in that object.
- Create the third function that can display the maximum grade and the student’s name.
- Create a sorting function that can sort the arrays based on the student’s grade.
- Display all the grades and names sorted by the grade.

Please modify the JavaScript code (HTML) below to meet the requirements, and submit it. Also submit a screenshot of the output.

<html>
<body>
<script>
//store student name in student array and the grade in grade array
function spush(slist, name, sgrade, grade){
slist.push(name);//student list
   sgrade.push(grade);//grade list
}
//show all the student names and their grades
function showlist(slist, sgrade){
var i;
for (i = 0; i < slist.length; i++){
document.writeln(slist[i] +" "+sgrade[i]+ "<br>");
}
}
function findmax(sgrade){
var i;
   var max;
   var maxid;
   max = sgrade[0];
   maxid = 0;
  
   for(i=1;i<sgrade.length; i++){
   if(max < sgrade[i]){
   max = sgrade[i];
       maxid = i;
   }}
  
return maxid;//using index number
   }
var stdlist = [];
var sgrade =[];
var mid;
//instead of following, please use prompt for input
spush(stdlist, "John", sgrade, 90);
spush(stdlist, "Tom", sgrade, 95);
spush(stdlist, "Mary", sgrade, 97);
showlist(stdlist, sgrade);
mid = findmax(sgrade);//max grade index number
  
document.writeln("The maximum grade: "+stdlist[mid]+" "+sgrade[mid]);
</script>
</body>
</html>

Solutions

Expert Solution

<html>
<body>
<script>
//store student name in student array and the grade in grade array
function spush(slist, name, sgrade, grade) {
  slist.push(name);//student list
  sgrade.push(grade);//grade list
}

//show all the student names and their grades
function showlist(slist, sgrade) {
  var i;
  for (i = 0; i < slist.length; i++) {
    document.writeln(slist[i] +" "+sgrade[i]+ "<br>");
  }
}

function findMaxIndex(sgrade){
  var i;
  var max;
  var maxid;
  max = sgrade[0];
  maxid = 0;

  for(i=1;i<sgrade.length; i++){
    if(max < sgrade[i]){
      max = sgrade[i];
      maxid = i;
    }
  }
  
  return maxid;//using index number
}

function swap(arr, i, j){
    var temp = arr[i];
    arr[i] = arr[j];
    arr[j] = temp;
}

function sortData(stdlist, sgrade) {
    var len = stdlist.length
    for (i=0; i < len; i++){
        for (j=0, stop=len-i; j < stop; j++){
            if (sgrade[j] > sgrade[j+1]){
                swap(sgrade, j, j+1);
                swap(stdlist, j, j+1);
            }
        }
    }
}

var stdlist = Array();
var sgrade = Array();
var name
while(name != '???') {
  name = prompt('Enter name of student');
  if(name == '???') {
    break;
  }
  var grade = parseFloat(prompt('Enter grades: '));
  spush(stdlist, name, sgrade, grade);
}

showlist(stdlist, sgrade)
var index = findMaxIndex(sgrade)
document.writeln("The maximum grade: "+stdlist[index]+" "+sgrade[index]);

sortData(stdlist, sgrade)
showlist(stdlist, sgrade)

</script>
</body>
</html>
**************************************************

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venereology answered 5 hours ago
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