Challenge 321 solutions by Packy Anderson

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

1 blog post

2 files changed, 74 insertions, 0 deletions

diff --git a/challenge-321/packy-anderson/python/ch-1.py b/challenge-321/packy-anderson/python/ch-1.py
new file mode 100755
index 0000000000..a39a0b68ec
--- /dev/null
+++ b/challenge-321/packy-anderson/python/ch-1.py
@@ -0,0 +1,46 @@
+#!/usr/bin/env python
+
+from collections import Counter
+
+def distinctAverages(nums):
+  nums.sort() # list.sort() works in place
+  explain, step = "", 0
+  averages = Counter()
+  while nums:
+    min, max = nums.pop(0), nums.pop(-1)
+    avg = (min + max) / 2
+    # since in Python, this will always produce a real number,
+    # we need to do a little more work to make sure avg is an
+    # integer when it has no fractional component
+    if avg == int(avg):
+      avg = int(avg)
+    step += 1
+    explain += (
+      f"Step {step}: Min = {min}, Max = {max}, Avg = {avg}\n"
+    )
+    averages[avg] += 1
+  count = len(list(averages))
+  explain += (
+    f"\nThe count of distinct average is {count}."
+  )
+  return count, explain
+
+def int_join(joiner, arr):
+  return joiner.join(map(lambda i: str(i), arr))
+
+def solution(nums):
+  print(f'Input: @nums = ({int_join(", ", nums)})')
+  count, explain = distinctAverages(nums)
+  print(f'Output: {count}\n\n{explain}')
+
+print('Example 1:')
+solution([1, 2, 4, 3, 5, 6])
+
+print('\nExample 2:')
+solution([0, 2, 4, 8, 3, 5])
+
+print('\nExample 3:')
+solution([7, 3, 1, 0, 5, 9])
+
+print('\nExample 4:')
+solution([1, 9, 2, 6, 3, 4])
\ No newline at end of file
diff --git a/challenge-321/packy-anderson/python/ch-2.py b/challenge-321/packy-anderson/python/ch-2.py
new file mode 100755
index 0000000000..e1f1bc7c82
--- /dev/null
+++ b/challenge-321/packy-anderson/python/ch-2.py
@@ -0,0 +1,28 @@
+#!/usr/bin/env python
+
+import re
+
+def backspaceCompare(str1, str2):
+  s1 = re.sub(r'.\#', "", str1)
+  while s1 != str1:
+    str1 = s1
+    s1 = re.sub(r'.\#', "", str1)
+  s2 = re.sub(r'.\#', "", str2)
+  while s2 != str2:
+    str2 = s2
+    s2 = re.sub(r'.\#', "", str2)
+  return s1 == s2
+
+def solution(str1, str2):
+  print(f'Input: $str1 = "{str1}"')
+  print(f'       $str2 = "{str2}"')
+  print(f'Output: { backspaceCompare(str1, str2) }')
+
+print('Example 1:')
+solution("ab#c", "ad#c")
+
+print('\nExample 2:')
+solution("ab##", "a#b#")
+
+print('\nExample 3:')
+solution("a#b", "c")