Determine how insertion sort can be observed

[Tyriar]

With the shift observer, several comparisons take place "during" the shift. That is after the item is overwritten but before it's put into it's final position.

[Tyriar]

Something like this?

function shiftStartObserver(startIndex) {}
function shiftedValueComparisonObserver(otherIndex) {}
function shiftEndObserver(endIndex) {}

[Tyriar]

A problem to be careful of is not to mess with the algorithm too much as it's used as part of the article on GWTW. Perhaps a custom compare function for shifting would be a better idea?

function newTempVariable(array, i)
function compareWithTemp(array, i, temp)