sgreen solutions to challenge 271

1 files changed, 29 insertions, 0 deletions

diff --git a/challenge-271/sgreen/python/ch-2.py b/challenge-271/sgreen/python/ch-2.py
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+++ b/challenge-271/sgreen/python/ch-2.py
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+#!/usr/bin/env python3
+
+import sys
+
+
+def sort_by_1_bits(ints: list) -> list:
+    """
+    Sorts a list of integers based on the number of set bits (1s) in their
+    binary representation. If they are equal, they are sorted by their value.
+
+    Args:
+        ints (list): A list of integers to be sorted.
+
+    Returns:
+        list: A new list of integers sorted based on the criteria above.
+    """
+    sorted_ints = sorted(ints, key=lambda x: (bin(x).count('1'), x))
+    return sorted_ints
+
+
+def main():
+    # Convert input into integers
+    array = [int(n) for n in sys.argv[1:]]
+    result = sort_by_1_bits(array)
+    print(tuple(result))
+
+
+if __name__ == '__main__':
+    main()