From 7f77a469f67b79587c975db614d2098421fe4056 Mon Sep 17 00:00:00 2001
From: Jordi Ayala <jord7as@gmail.com>
Date: Mon, 31 Jul 2023 09:59:05 -0600
Subject: [PATCH] Reto #28 - Java

---
 .../java/asjordi.java"                        | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 "Retos/Reto #28 - EXPRESI\303\223N MATEM\303\201TICA [Media]/java/asjordi.java"

diff --git "a/Retos/Reto #28 - EXPRESI\303\223N MATEM\303\201TICA [Media]/java/asjordi.java" "b/Retos/Reto #28 - EXPRESI\303\223N MATEM\303\201TICA [Media]/java/asjordi.java"
new file mode 100644
index 0000000000..8ccf3f2b24
--- /dev/null
+++ "b/Retos/Reto #28 - EXPRESI\303\223N MATEM\303\201TICA [Media]/java/asjordi.java"	
@@ -0,0 +1,35 @@
+public class MathematicalExpression {
+
+    public static boolean check(String expression){
+
+        String[] components = expression.split(" ");
+
+        if (components.length < 3 || components.length % 2 == 0) return false;
+
+        boolean check = true;
+
+        for (int i = 0; i < components.length; i++) {
+            if (i % 2 == 0) check = isNumber(components[i]);
+            else check = isOperation(components[i]);
+
+            if (!check) return false;
+        }
+
+        return check;
+
+    }
+
+    private static boolean isNumber(String str) {
+        try {
+            Double.parseDouble(str);
+            return true;
+        } catch (NumberFormatException e) {
+            return false;
+        }
+    }
+
+    private static boolean isOperation(String str) {
+        return str.matches("[+\\-*/%]");
+    }
+
+}