feat: 연산자 우선순위 Enum 정의

Author: ksundong

yoonexample/src/main/java/stack/OperatorPriority.java

@@ -0,0 +1,35 @@
+package stack;
+
+public enum OperatorPriority {
+  TOP(3),
+  MID(2),
+  BOT(1),
+  NONE(-1);
+
+  private final int priority;
+
+  OperatorPriority(int priority) {
+    this.priority = priority;
+  }
+
+  public static OperatorPriority getOperatorPriority(char sign) {
+    switch (sign) {
+      case '*':
+      case '/':
+        return TOP;
+      case '+':
+      case '-':
+        return MID;
+      case '(':
+        return BOT;
+      default:
+        return NONE;
+    }
+  }
+
+  public int getPriority() {
+    return priority;
+  }
+
+
+}