From e9a72107edfb48572c0c723cd9f69ad09587df4a Mon Sep 17 00:00:00 2001
From: Vasily Guzov <vasily.guzov@gmail.com>
Date: Thu, 3 Oct 2024 13:04:36 +0300
Subject: [PATCH] [7kyu][fundamentals] Growth of a Population

https://www.codewars.com/kata/563b662a59afc2b5120000c6

n a small town the population is p0 = 1000 at the beginning of a year.
The population regularly increases by 2 percent per year and moreover 50
new inhabitants per year come to live in the town. How many years does
the town need to see its population greater than or equal to p = 1200
inhabitants?
---
 lib/nbYear.ts | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 lib/nbYear.ts

diff --git a/lib/nbYear.ts b/lib/nbYear.ts
new file mode 100644
index 0000000..675060b
--- /dev/null
+++ b/lib/nbYear.ts
@@ -0,0 +1,18 @@
+export const nbYear = (p0: number, percent: number, aug: number, p: number): number => {
+
+  let year = 0
+
+  while (p0 < p) {
+    p0 += Math.floor(p0 * percent / 100) + aug
+    year++
+  }
+
+  return year
+}
+
+console.log(
+  nbYear(1500, 5, 100, 5000), 15
+)
+console.log(
+  nbYear(1500000, 2.5, 10000, 2000000), 10
+)