Create ch-1-CORRECTED.py

1 files changed, 81 insertions, 0 deletions

diff --git a/challenge-052/user-person/python/ch-1-CORRECTED.py b/challenge-052/user-person/python/ch-1-CORRECTED.py
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+#!/usr/bin/env python3
+
+###########################################################################
+# script name: ch-1-CORRECTED.py                                          #
+#                                                                         #
+# https://github.com/user-person                                          #
+#                                                                         #
+# https://perlweeklychallenge.org/blog/perl-weekly-challenge-052/         #
+#                                                                         #
+# Stepping Numbers                                                        #
+#                                                                         #
+# Write a script to accept two numbers between 100 and 999. It should     #
+# then print all Stepping Numbers between them.                           #
+#                                                                         #
+# A number is called a stepping number if the adjacent digits have a      #
+# difference of 1. For example, 456 is a stepping number but 129 is not.  #
+#                                                                         #
+###########################################################################
+
+import os
+import re
+import sys
+
+step = []
+UPPER_LIMIT = 1000
+LOWER_LIMIT = 99
+
+for i in range(1,10):
+    if i < 8:                   # UP UP
+        step.append( (i * 100) + ((i+1) * 10) + (i+2) )
+
+    if i > 1:                   # DOWN DOWN
+        step.append( (i * 100) + ((i-1) * 10) + (i-2) )
+
+    if i < 9:                   # UP DOWN
+        step.append( (i * 100) + ((i+1) * 10) + i )
+
+    step.append( (i * 100) + ((i-1) * 10) + i ) # DOWN UP
+
+step.sort()
+
+errorString = os.path.basename(sys.argv[0]) + ' requires 2 arguments between 100 and 999.'
+
+if len(sys.argv) != 3:
+    print(errorString)
+    exit(1)
+
+args = [int(arg) for arg in sys.argv[1:]]
+        
+for arg in args:
+    if arg < LOWER_LIMIT or arg > UPPER_LIMIT:
+        print(errorString)
+        exit(1)
+
+max = min = 0
+
+if args[0] < args[1]:
+    min = args[0]
+    max = args[1]
+elif args[1] < args[0]:
+    min = args[1]
+    max = args[0]
+else:
+    max = min = args[0]
+
+commaFlag = False
+
+if step[0] > max or step[-1] < min:
+    exit(0)
+
+for num in step:
+    if num >= min and num <= max:
+        if commaFlag:
+            print(', ', end='')
+        print(num, end='')
+        commaFlag = True
+    elif commaFlag:
+        break
+
+if commaFlag:
+    print()