Challenge 287 solutions by Packy Anderson

  * Raku that maybe looks like Raku, but mostly like Perl
  * Perl
  * Python that definitely looks like Perl
  * Elixir

1 Blog post

1 files changed, 87 insertions, 0 deletions

diff --git a/challenge-287/packy-anderson/python/ch-1.py b/challenge-287/packy-anderson/python/ch-1.py
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+#!/usr/bin/env python
+
+import regex
+
+def strongPassword(str):
+  hasUpper = 0
+  hasLower = 0
+  hasDigit = 0
+  runs = []
+
+  for char in str:
+    # identify runs of characters
+    if len(runs) == 0 or runs[-1][-1] != char:
+      # we have no previous run of characters, or the last
+      # character of the last run doesn't match this character
+      runs.append(char)
+    else:
+      # append the latest character to the run
+      runs[-1] += char
+
+    # count the character classes we're interested in
+    if   regex.match(r"\p{Lu}", char):
+      hasUpper += 1
+    elif regex.match(r"\p{Ll}", char):
+      hasLower += 1
+    elif regex.match(r"\p{N}", char):
+      hasDigit += 1
+
+  # count how many characters need to be REPLACED
+  replacements = 0
+  for run in runs:
+    # if the run is 3 or more characters
+    if len(run) >= 3:
+      # we need one replacement per multiple of 3
+      replacements += int(len(run) / 3)
+
+  # figure out how many changes are needed
+  changes = 0
+  length  = len(str)
+
+  for has in [hasUpper, hasLower, hasDigit]:
+    if has == 0:
+      changes += 1 # we need to add a character of this type
+
+      # if we have characters that need to be REPLACED, we don't
+      # need to add to the string length to make the change
+      if replacements > 0:
+        replacements -= 1
+      else:
+        # we need to add characters to make the change
+        length += 1
+
+  if length < 6:
+    # not enough characters, we need MORE!
+    changes += 6 - length
+
+  if replacements > 0:
+    # if we need more replacements, add them to the total
+    changes += replacements
+
+  return changes
+
+
+def solution(str):
+    print(f'Input: $str = "{str}"')
+    print(f'Output: {strongPassword(str)}')
+
+print('Example 1:')
+solution("a")
+
+print('\nExample 2:')
+solution("aB2")
+
+print('\nExample 3:')
+solution("PaaSW0rd")
+
+print('\nExample 4:')
+solution("Paaasw0rd")
+
+print('\nExample 5:')
+solution("aaaaa")
+
+print('\nExample 6:')
+solution("aaaaaabbbb")
+
+print('\nExample 7:')
+solution("voilÀ३")