Problems › TypeScript › finance
Split a total into installments
A checkout spreads a total across installments, keeping the early ones a cent higher so each slice is as equal as possible.
- No installment differs from another by more than one minor unit.
- The first (total mod installments) installments carry the larger value; the rest the smaller.
- installments of zero or less gives an empty list.
installmentPlan(totalMinor: int, installments: int) → list<int>
Where you start
function installmentPlan(totalMinor: number, installments: number): number[] {
}Worked examples
| Call | Result |
|---|---|
installmentPlan(100, 3) | [34,33,33] |
installmentPlan(100, 6) | [17,17,17,17,16,16] |
installmentPlan(7, 3) | [3,2,2] |
installmentPlan(10, 2) | [5,5] |
Hint
Compute the floor share and the leftover, then hand the leftovers to the front.
Reference solution in TypeScript
function installmentPlan(totalMinor: number, installments: number): number[] {
const result: number[] = [];
if (installments <= 0) return result;
const per = Math.floor(totalMinor / installments);
const extra = totalMinor % installments;
for (let i = 0; i < installments; i++) result.push(i < extra ? per + 1 : per);
return result;
}