Initial data commit

Task/Odd-word-problem/Python/odd-word-problem-1.py

@@ -0,0 +1,28 @@
+from sys import stdin, stdout
+
+def char_in(): return stdin.read(1)
+def char_out(c): stdout.write(c)
+
+def odd(prev = lambda: None):
+	a = char_in()
+	if not a.isalpha():
+		prev()
+		char_out(a)
+		return a != '.'
+
+	# delay action until later, in the shape of a closure
+	def clos():
+		char_out(a)
+		prev()
+
+	return odd(clos)
+
+def even():
+	while True:
+		c = char_in()
+		char_out(c)
+		if not c.isalpha(): return c != '.'
+
+e = False
+while odd() if e else even():
+	e = not e

Task/Odd-word-problem/Python/odd-word-problem-2.py

@@ -0,0 +1,4 @@
+$ echo "what,is,the;meaning,of:life." | python odd.py
+what,si,the;gninaem,of:efil.
+$ echo "we,are;not,in,kansas;any,more." | python odd.py
+we,era;not,ni,kansas;yna,more.

Task/Odd-word-problem/Python/odd-word-problem-3.py

@@ -0,0 +1,28 @@
+from sys import stdin, stdout
+
+def char_in(): return stdin.read(1)
+def char_out(c): stdout.write(c)
+
+def odd():
+	a = char_in()
+	if a.isalpha():
+		r = odd()
+		char_out(a)
+		return r
+
+	# delay printing terminator until later, in the shape of a closure
+	def clos():
+		char_out(a)
+		return a != '.'
+
+	return clos
+
+def even():
+	while True:
+		c = char_in()
+		char_out(c)
+		if not c.isalpha(): return c != '.'
+
+e = False
+while odd()() if e else even():
+	e = not e

Task/Odd-word-problem/Python/odd-word-problem-4.py

@@ -0,0 +1,33 @@
+from sys import stdin, stdout
+
+def fwd(c):
+    if c.isalpha():
+        return [stdout.write(c), (yield from fwd((yield f)))][1]
+    else:
+        return c
+
+def rev(c):
+    if c.isalpha():
+        return [(yield from rev((yield r))), stdout.write(c)][0]
+    else:
+        return c
+
+def fw():
+    while True:
+        stdout.write((yield from fwd((yield r))))
+
+def re():
+    while True:
+        stdout.write((yield from rev((yield f))))
+
+f = fw()
+r = re()
+next(f)
+next(r)
+
+coro = f
+while True:
+    c = stdin.read(1)
+    if not c:
+        break
+    coro = coro.send(c)