Merge pull request #5407 from pauloscustodio/devel

Add Perl and Python solutions to challenge 032

2 files changed, 56 insertions, 0 deletions

diff --git a/challenge-034/paulo-custodio/python/ch-1.py b/challenge-034/paulo-custodio/python/ch-1.py
new file mode 100644
index 0000000000..d7855da4e7
--- /dev/null
+++ b/challenge-034/paulo-custodio/python/ch-1.py
@@ -0,0 +1,11 @@
+#!/usr/bin/python3
+
+# Challenge 034
+#
+# Task #1
+# Contributed by Dave Cross
+# Write a program that demonstrates using hash slices and/or array slices.
+
+data = {'oranges':3, 'pears':2, 'apples':4}
+values = [data[x] for x in 'oranges apples'.split()]
+print(*values, sep=", ")
diff --git a/challenge-034/paulo-custodio/python/ch-2.py b/challenge-034/paulo-custodio/python/ch-2.py
new file mode 100644
index 0000000000..87134c16dc
--- /dev/null
+++ b/challenge-034/paulo-custodio/python/ch-2.py
@@ -0,0 +1,45 @@
+#!/usr/bin/python3
+
+# Challenge 034
+#
+# Task #2
+# Contributed by Dave Cross
+# Write a program that demonstrates a dispatch table.
+
+import sys
+
+# simple rpn calculator
+stack = []
+def add():
+    b = stack.pop()
+    a = stack.pop()
+    stack.append(a+b)
+
+def sub():
+    b = stack.pop()
+    a = stack.pop()
+    stack.append(a-b)
+
+def mul():
+    b = stack.pop()
+    a = stack.pop()
+    stack.append(a*b)
+
+def div():
+    b = stack.pop()
+    a = stack.pop()
+    stack.append(a/b)
+
+def prt():
+    print(stack.pop())
+
+dispatch = {'+': add, '-':sub, '*':mul, '/':div, '.':prt}
+
+prog = "".join(sys.argv[1:])
+for c in prog:
+    if c.isspace():
+        pass
+    elif c.isdigit():
+        stack.append(int(c))
+    else:
+        dispatch[c]()