Add alternative solution for day 1

day-01/day-01.py

@@ -25,9 +25,19 @@ def part_2(input):
     print("Part 2 result:", result)
 
 
+def alt_solution(input, num_summands):
+    result = 0
+    for i in range(len(input) - num_summands):
+        if int(input[i]) < int(input[i + num_summands]):
+            result += 1
+    print("Alternative result:", result, ", summands =", num_summands)
+
+
 input = list()
 with open('input.txt') as fp:
     input = fp.readlines()
 
 part_1(input)
 part_2(input)
+alt_solution(input, 1)
+alt_solution(input, 3)