Challenge 294 solutions by Packy Anderson

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

1 Blog post

1 files changed, 35 insertions, 0 deletions

diff --git a/challenge-294/packy-anderson/python/ch-1.py b/challenge-294/packy-anderson/python/ch-1.py
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+#!/usr/bin/env python
+
+from collections import Counter
+
+def consecutiveSequence(ints):
+  count  = Counter(ints) # count the values
+  maxVal = max(ints) # find the max value
+  maxSeq = 1
+  seq = 0
+  for i in range(maxVal + 1): # because range(n) goes from 0 to n-1
+    if (count[i] > 0):
+      seq += 1 # we've found a consecutive value
+      if seq > maxSeq:
+        maxSeq = seq # keep track of the longest
+    else:
+      seq = 0 # the sequence broke
+
+  # we want sequences longer than one value
+  return maxSeq if maxSeq > 1 else -1
+
+def comma_join(arr):
+  return ', '.join(map(lambda i: str(i), arr))
+
+def solution(ints):
+  print(f'Input: @ints = ({comma_join(ints)})')
+  print(f'Output: { consecutiveSequence(ints) }')
+
+print('Example 1:')
+solution([10, 4, 20, 1, 3, 2])
+
+print('\nExample 2:')
+solution([0, 6, 1, 8, 5, 2, 4, 3, 0, 7])
+
+print('\nExample 3:')
+solution([10, 30, 20])