Untitled

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>

<script id="jsbin-javascript">
// array of objects
var result = [{name:"David",marks:80},{name:"Vinoth",marks:77},{name:"Divya", marks:88},
             {name:"Ishitha",marks:95},{name:"Thomas",marks:65}];

// function that takes array and output the average of marks
function average(res){
  var total = 0;
  for(var i=0; i<res.length; i++){
    total +=res[i].marks;
  }
  var avg = total / res.length;
  return avg;
}
//calling average function to get average marks
console.log(average(result));

//function to create inverted left pyramid using given height
function invertedLeftPyramid(a){
  var pattern= '';
  for(var i=a; i>=1; i--){
    for(var j=1; j<=i; j++){
      pattern += "* ";
    }
   console.log(pattern);
   pattern = "";
  }
}
//call invertedLeftPyramid functiont to print pyramid
invertedLeftPyramid(5);

//function to create inverted right pyramid using given height
function invertedRightPyramid(a){
  var pattern = '';
  for(var i=a; i>=1; i--){
    for(var j=a; j>=1; j--){
      if(j>i){
        pattern+= "  ";
      }
      else{
        pattern+= "* ";
      }
    }
    console.log(pattern);
    pattern='';
  }
}
//call invertedRightPyramid function to print pyramid
invertedRightPyramid(5);
</script>


<script id="jsbin-source-javascript" type="text/javascript">// array of objects
var result = [{name:"David",marks:80},{name:"Vinoth",marks:77},{name:"Divya", marks:88},
             {name:"Ishitha",marks:95},{name:"Thomas",marks:65}];

// function that takes array and output the average of marks
function average(res){
  var total = 0;
  for(var i=0; i<res.length; i++){
    total +=res[i].marks;
  }
  var avg = total / res.length;
  return avg;
}
//calling average function to get average marks
console.log(average(result));

//function to create inverted left pyramid using given height
function invertedLeftPyramid(a){
  var pattern= '';
  for(var i=a; i>=1; i--){
    for(var j=1; j<=i; j++){
      pattern += "* ";
    }
   console.log(pattern);
   pattern = "";
  }
}
//call invertedLeftPyramid functiont to print pyramid
invertedLeftPyramid(5);

//function to create inverted right pyramid using given height
function invertedRightPyramid(a){
  var pattern = '';
  for(var i=a; i>=1; i--){
    for(var j=a; j>=1; j--){
      if(j>i){
        pattern+= "  ";
      }
      else{
        pattern+= "* ";
      }
    }
    console.log(pattern);
    pattern='';
  }
}
//call invertedRightPyramid function to print pyramid
invertedRightPyramid(5);</script></body>
</html>