CodeParkBuild a tiny spreadsheet engine as a Spreadsheet class.
new Spreadsheet() starts with every cell empty. A cell name is one or more uppercase letters followed by one or more digits, like A1, B12 or AA3. An empty cell has the value 0.
Input: s.set("A1", "2"); s.set("B1", "3"); s.set("C1", "=A1+B1+10")
s.get("C1")
Output: 15
Input: s.set("A1", "7")
s.get("C1")
Output: 20C1 updates when A1 changes
It comes in 3 parts, each building on the last: Values and formulas, Who depends on a cell, Reject cycles.