Add Python solution to challenge 17

6 files changed, 293 insertions, 98 deletions

diff --git a/challenge-017/paulo-custodio/Makefile b/challenge-017/paulo-custodio/Makefile
new file mode 100644
index 0000000000..c3c762d746
--- /dev/null
+++ b/challenge-017/paulo-custodio/Makefile
@@ -0,0 +1,2 @@
+all:
+	perl ../../challenge-001/paulo-custodio/test.pl
diff --git a/challenge-017/paulo-custodio/python/ch-1.py b/challenge-017/paulo-custodio/python/ch-1.py
new file mode 100644
index 0000000000..a8adceb3a1
--- /dev/null
+++ b/challenge-017/paulo-custodio/python/ch-1.py
@@ -0,0 +1,32 @@
+#!/usr/bin/python3
+
+# Challenge 017
+#
+# Task #1
+# Create a script to demonstrate Ackermann function. The Ackermann function is
+# defined as below, m and n are positive number:
+#
+#   A(m, n) = n + 1                  if m = 0
+#   A(m, n) = A(m - 1, 1)            if m > 0 and n = 0
+#   A(m, n) = A(m - 1, A(m, n - 1))  if m > 0 and n > 0
+#
+# Example expansions as shown in wiki page.
+#
+#  A(1, 2) = A(0, A(1, 1))
+#          = A(0, A(0, A(1, 0)))
+#          = A(0, A(0, A(0, 1)))
+#          = A(0, A(0, 2))
+#          = A(0, 3)
+#          = 4
+
+import sys
+
+def A(m, n):
+    if m==0:
+        return n+1
+    elif m>0 and n==0:
+        return A(m-1, 1)
+    elif m>0 and n>0:
+        return A(m-1, A(m, n-1))
+
+print(A(*[int(x) for x in sys.argv[1:3]]))
diff --git a/challenge-017/paulo-custodio/python/ch-2.py b/challenge-017/paulo-custodio/python/ch-2.py
new file mode 100644
index 0000000000..7493986e88
--- /dev/null
+++ b/challenge-017/paulo-custodio/python/ch-2.py
@@ -0,0 +1,87 @@
+#!/usr/bin/python3
+
+# Challenge 017
+#
+# Task #2
+# Create a script to parse URL and print the components of URL. According to
+# Wiki page, the URL syntax is as below:
+#
+# scheme:[//[userinfo@]host[:port]]path[?query][#fragment]
+#
+# For example: jdbc://user:password@localhost:3306/pwc?profile=true#h1
+#
+#   scheme:   jdbc
+#   userinfo: user:password
+#   host:     localhost
+#   port:     3306
+#   path:     /pwc
+#   query:    profile=true
+#   fragment: h1
+
+import sys
+import re
+
+url = sys.argv[1]
+
+word = r"(?i:[a-z_][a-z_0-9+.-]*)"
+pathre = r"(?:"+word+r"|/)+"
+
+# scheme(1)
+matches = re.match(r"^("+word+r"):", url)
+if matches:
+    scheme = matches.group(1)
+    url = url[matches.end(0):]
+else:
+    scheme = ""
+
+# userinfo(1), host(2), port(3)
+matches = re.match(r"^//"+ \
+                   r"(?:("+word+r"(?:[:].*?)?)[@])?"+ \
+                   r"("+word+r")"+ \
+                   r"(?:[:](\d+))?", url)
+if matches:
+    if matches.group(1):
+        userinfo = matches.group(1)
+    else:
+        userinfo = ""
+
+    host = matches.group(2)
+
+    if matches.group(3):
+        port = matches.group(3)
+    else:
+        port = ""
+
+    url = url[matches.end(0):]
+else:
+    userinfo, host, port = "", "", ""
+
+# path(1), query(2), fragment(3)
+matches = re.match(r"("+pathre+r")"+ \
+                   r"(?:[?]([^#]*))?"+ \
+                   r"(?:[#](.*))?"+ \
+                   r"$", url)
+if matches:
+    path = matches.group(1)
+
+    if matches.group(2):
+        query = matches.group(2)
+    else:
+        query = ""
+
+    if matches.group(3):
+        fragment = matches.group(3)
+    else:
+        fragment = ""
+
+    url = url[matches.end(0):]
+else:
+    path, query, fragment = "", "", ""
+
+print("scheme:   "+scheme)
+print("userinfo: "+userinfo)
+print("host:     "+host)
+print("port:     "+port)
+print("path:     "+path)
+print("query:    "+query)
+print("fragment: "+fragment)
diff --git a/challenge-017/paulo-custodio/t/test-1.yaml b/challenge-017/paulo-custodio/t/test-1.yaml
new file mode 100644
index 0000000000..a6525cc883
--- /dev/null
+++ b/challenge-017/paulo-custodio/t/test-1.yaml
@@ -0,0 +1,100 @@
+- setup:
+  cleanup:
+  args:     0 0
+  input:
+  output:   1
+- setup:
+  cleanup:
+  args:     0 1
+  input:
+  output:   2
+- setup:
+  cleanup:
+  args:     0 2
+  input:
+  output:   3
+- setup:
+  cleanup:
+  args:     0 3
+  input:
+  output:   4
+- setup:
+  cleanup:
+  args:     0 4
+  input:
+  output:   5
+- setup:
+  cleanup:
+  args:     1 0
+  input:
+  output:   2
+- setup:
+  cleanup:
+  args:     1 1
+  input:
+  output:   3
+- setup:
+  cleanup:
+  args:     1 2
+  input:
+  output:   4
+- setup:
+  cleanup:
+  args:     1 3
+  input:
+  output:   5
+- setup:
+  cleanup:
+  args:     1 4
+  input:
+  output:   6
+- setup:
+  cleanup:
+  args:     2 0
+  input:
+  output:   3
+- setup:
+  cleanup:
+  args:     2 1
+  input:
+  output:   5
+- setup:
+  cleanup:
+  args:     2 2
+  input:
+  output:   7
+- setup:
+  cleanup:
+  args:     2 3
+  input:
+  output:   9
+- setup:
+  cleanup:
+  args:     2 4
+  input:
+  output:   11
+- setup:
+  cleanup:
+  args:     3 0
+  input:
+  output:   5
+- setup:
+  cleanup:
+  args:     3 1
+  input:
+  output:   13
+- setup:
+  cleanup:
+  args:     3 2
+  input:
+  output:   29
+- setup:
+  cleanup:
+  args:     3 3
+  input:
+  output:   61
+- setup:
+  cleanup:
+  args:     3 4
+  input:
+  output:   125
diff --git a/challenge-017/paulo-custodio/t/test-2.yaml b/challenge-017/paulo-custodio/t/test-2.yaml
new file mode 100644
index 0000000000..a1b82bbc9b
--- /dev/null
+++ b/challenge-017/paulo-custodio/t/test-2.yaml
@@ -0,0 +1,72 @@
+- setup:
+  cleanup:
+  args:     jdbc://user:password@localhost:3306/pwc?profile=true#h1
+  input:
+  output:   |
+            scheme:   jdbc
+            userinfo: user:password
+            host:     localhost
+            port:     3306
+            path:     /pwc
+            query:    profile=true
+            fragment: h1
+- setup:
+  cleanup:
+  args:     jdbc://localhost:3306/pwc?profile=true#h1
+  input:
+  output:   |
+            scheme:   jdbc
+            userinfo:
+            host:     localhost
+            port:     3306
+            path:     /pwc
+            query:    profile=true
+            fragment: h1
+- setup:
+  cleanup:
+  args:     jdbc://localhost/pwc?profile=true#h1
+  input:
+  output:   |
+            scheme:   jdbc
+            userinfo:
+            host:     localhost
+            port:
+            path:     /pwc
+            query:    profile=true
+            fragment: h1
+- setup:
+  cleanup:
+  args:     jdbc:/pwc?profile=true#h1
+  input:
+  output:   |
+            scheme:   jdbc
+            userinfo:
+            host:
+            port:
+            path:     /pwc
+            query:    profile=true
+            fragment: h1
+- setup:
+  cleanup:
+  args:     jdbc:/pwc?profile=true
+  input:
+  output:   |
+            scheme:   jdbc
+            userinfo:
+            host:
+            port:
+            path:     /pwc
+            query:    profile=true
+            fragment:
+- setup:
+  cleanup:
+  args:     jdbc:/pwc
+  input:
+  output:   |
+            scheme:   jdbc
+            userinfo:
+            host:
+            port:
+            path:     /pwc
+            query:
+            fragment:
diff --git a/challenge-017/paulo-custodio/test.pl b/challenge-017/paulo-custodio/test.pl
deleted file mode 100644
index 04329cfebe..0000000000
--- a/challenge-017/paulo-custodio/test.pl
+++ /dev/null
@@ -1,98 +0,0 @@
-#!/usr/bin/perl
-
-use Modern::Perl;
-use Test::More;
-
-is capture("perl perl/ch-1.pl 0 0"), "1\n";
-is capture("perl perl/ch-1.pl 0 1"), "2\n";
-is capture("perl perl/ch-1.pl 0 2"), "3\n";
-is capture("perl perl/ch-1.pl 0 3"), "4\n";
-is capture("perl perl/ch-1.pl 0 4"), "5\n";
-
-is capture("perl perl/ch-1.pl 1 0"), "2\n";
-is capture("perl perl/ch-1.pl 1 1"), "3\n";
-is capture("perl perl/ch-1.pl 1 2"), "4\n";
-is capture("perl perl/ch-1.pl 1 3"), "5\n";
-is capture("perl perl/ch-1.pl 1 4"), "6\n";
-
-is capture("perl perl/ch-1.pl 2 0"), "3\n";
-is capture("perl perl/ch-1.pl 2 1"), "5\n";
-is capture("perl perl/ch-1.pl 2 2"), "7\n";
-is capture("perl perl/ch-1.pl 2 3"), "9\n";
-is capture("perl perl/ch-1.pl 2 4"), "11\n";
-
-is capture("perl perl/ch-1.pl 3 0"), "5\n";
-is capture("perl perl/ch-1.pl 3 1"), "13\n";
-is capture("perl perl/ch-1.pl 3 2"), "29\n";
-is capture("perl perl/ch-1.pl 3 3"), "61\n";
-is capture("perl perl/ch-1.pl 3 4"), "125\n";
-
-
-is capture('perl perl/ch-2.pl jdbc://user:password@localhost:3306/pwc?profile=true#h1'), <<END;
-scheme:   jdbc
-userinfo: user:password
-host:     localhost
-port:     3306
-path:     /pwc
-query:    profile=true
-fragment: h1
-END
-
-is capture('perl perl/ch-2.pl jdbc://localhost:3306/pwc?profile=true#h1'), <<END;
-scheme:   jdbc
-userinfo:
-host:     localhost
-port:     3306
-path:     /pwc
-query:    profile=true
-fragment: h1
-END
-
-is capture('perl perl/ch-2.pl jdbc://localhost/pwc?profile=true#h1'), <<END;
-scheme:   jdbc
-userinfo:
-host:     localhost
-port:
-path:     /pwc
-query:    profile=true
-fragment: h1
-END
-
-is capture('perl perl/ch-2.pl jdbc:/pwc?profile=true#h1'), <<END;
-scheme:   jdbc
-userinfo:
-host:
-port:
-path:     /pwc
-query:    profile=true
-fragment: h1
-END
-
-is capture('perl perl/ch-2.pl jdbc:/pwc?profile=true'), <<END;
-scheme:   jdbc
-userinfo:
-host:
-port:
-path:     /pwc
-query:    profile=true
-fragment:
-END
-
-is capture('perl perl/ch-2.pl jdbc:/pwc'), <<END;
-scheme:   jdbc
-userinfo:
-host:
-port:
-path:     /pwc
-query:
-fragment:
-END
-
-done_testing;
-
-sub capture {
-    my($cmd) = @_;
-    my $out = `$cmd`;
-    $out =~ s/[ \t\v\f\r]*\n/\n/g;
-    return $out;
-}