치킨쿠폰: 추가

1.programmers/lv.0/치킨쿠폰.ts

@@ -0,0 +1,24 @@
+// https://school.programmers.co.kr/learn/courses/30/lessons/120884
+
+// ver 1. 최초 코드
+const 치킨쿠폰 = (chicken: number): number => {
+  let coupon = 0;
+  let totalService = 0;
+  while (chicken > 0) {
+    coupon += chicken % 10;
+    totalService += Math.floor(chicken / 10);
+    chicken = Math.floor(chicken / 10);
+    if (coupon >= 10) {
+      totalService += Math.floor(coupon / 10);
+      chicken += Math.floor(coupon / 10);
+      coupon = coupon % 10;
+    }
+  }
+  return totalService;
+};
+
+// ver 2. 개선 코드
+
+console.log(치킨쿠폰(100)); // 11
+console.log(치킨쿠폰(1081)); // 120
+console.log(치킨쿠폰(1999)); // 222