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-rw-r--r--challenge-052/user-person/python/ch-1-CORRECTED.py81
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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+++ 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()