Create ch-2.py

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+#!/usr/bin/env python3
+
+###########################################################################
+# script name: ch-2.py                                                    #
+#                                                                         #
+# https://github.com/user-person                                          #
+#                                                                         #
+# https://perlweeklychallenge.org/blog/perl-weekly-challenge-050/         #
+#                                                                         #
+# Noble Integer                                                           #
+# You are given a list, @L, of three or more random integers between 1    #
+# and 50. A Noble Integer is an integer N in @L, such that there are      #
+# exactly N integers greater than N in @L. Output any Noble Integer       #
+# found in @L, or an empty list if none were found.                       #
+#                                                                         #
+# An interesting question is whether or not there can be multiple Noble   #
+# Integers in a list.                                                     #
+#                                                                         #
+# For example,                                                            #
+#                                                                         #
+# Suppose we have list of 4 integers [2, 6, 1, 3].                        #
+#                                                                         #
+# Here we have 2 in the above list, known as Noble Integer, since there   #
+# are exactly 2 integers in the list i.e.3 and 6, which are greater than  #
+# 2.                                                                      #
+#                                                                         #
+# Therefore the script would print 2.                                     #
+#                                                                         #
+###########################################################################
+
+import re
+import sys
+
+def nobleInt(ints):
+    seen = dict()
+    ints.sort(key=int)
+   
+    for i in ints:
+        count = 0
+
+        for j in ints:
+
+            if int(i) < int(j):
+                count += 1
+
+        if int(count) == int(i):
+            if i in seen:
+                seen[i] += 1
+            else:
+                seen.update({i:1})
+    return seen.keys()
+
+input = "[2, 6, 1, 3]"
+
+if len(sys.argv) > 1:
+     input = ' '.join(sys.argv[1:])
+else:
+    print('default input:',input)
+     
+input = re.sub(r'[][, ]+', ' ', input)
+input = re.sub(r'\A\s+|\s+\Z', '', input)
+L     = re.split(r' ', input)
+
+nobleInteger = nobleInt(L)
+
+if nobleInteger:
+    for kys in nobleInteger:
+        print('noble integer:',kys)
+else:
+    print('No noble integer.')