Write a function named mean that takes an argument named list, which is the head cell of a linked list in the form below and returns the mean of the numbers in the data properties. Hint: the most efficient way to proceed is to make one iteration through the list computing the running sum and counting how many numbers are in the sum as you go. Then just divide to get the mean.

var tail = { next: null };
var cell2 = { data: 12, next: tail };
var cell1 = { data: 45: next: cell2 };
var head = { next: cell1 };

javascript programming
exercise: functions 08

// ADD YOUR FUNCTION UNDER THIS LINE

var tailA = { next: null };
var cellA2 = { data: 2, next: tailA };
var cellA1 = { data: 5, next: cellA2 };
var headA = { next: cellA1 };

var tailB = { next: null };
var cellB3 = { data: 2, next: tailB };
var cellB2 = { data: 7, next: cellB3 };
var cellB1 = { data: 6, next: cellB2 };
var headB = { next: cellB1 };

var tailC = { next: null };
var cellC3 = { data: 45, next: tailC };
var cellC2 = { data: 33, next: cellC3 };
var cellC1 = { data: 12, next: cellC2 };
var headC = { next: cellC1 };

var argAAS = [];
for (var i=0;i<testAA.length;i++) {
  argAAS.push( [] );
  for (var j=0;j<testAA[i].length-1;j++) {
    argAAS[i].push( str(testAA[i][j]) );
  }
}

var testFunction = mean;

function runTests(func,testAA) {
  var answerA = [];
  for (var i=0;i<testAA.length;++i)
    answerA.push( func.apply(null,testAA[i]) );
  return answerA;
}

function str(x) {
  return JSON.stringify(x);
}

run();
</script>

javascript programmingexercise: functions 08

javascript programming
exercise: functions 08