did comp sci and some electronics

1 files changed, 21 insertions, 0 deletions

diff --git a/comp/work/54/rpn.py b/comp/work/54/rpn.py
new file mode 100644
index 0000000..053a256
--- /dev/null
+++ b/comp/work/54/rpn.py
@@ -0,0 +1,21 @@
+def eval(expr):
+    s = []
+    for i in expr.split():
+        if i.isdigit():
+            s.push(int(i))
+        else:
+            a = s.pop()
+            b = s.pop()
+            match i:
+                case '+':
+                    s.push(b + a)
+                case '-':
+                    s.push(b - a)
+                case '*':
+                    s.push(b * a)
+                case '/':
+                    s.push(b / a)
+
+    print(s.pop())
+
+eval("1 2 +")