Burger making / 중급

Author: bona1122

bona1122/[week3]Queue/Burger_making.js

@@ -0,0 +1,18 @@
+// https://school.programmers.co.kr/learn/courses/30/lessons/133502
+
+function solution(ingredient) {
+  let stack = [];
+  let result = 0;
+  for (let i = 0; i < ingredient.length; i++) {
+    let item = ingredient[i];
+    stack.push(item);
+    if (stack.length >= 4) {
+      let last4 = stack.slice(-4);
+      if (last4.join("") === "1231") {
+        result++;
+        stack.splice(-4);
+      }
+    }
+  }
+  return result;
+}