💡 Add Even the Last

Author: joseguilhermefmoura

02_Home/02.py

@@ -0,0 +1,35 @@
+"""
+    # Even the Last
+
+    ## You are given an array of integers.
+    ## You should find the sum of the integers with even indexes (0th, 2nd, 4th...).
+    ## Then multiply this summed number and the final element of the array together.
+    ## Don't forget that the first element has an index of 0.
+    ## For an empty array, the result will always be 0 (zero).
+
+    - Input: A list of integers.
+    - Output: The number as an integer.
+
+    >> EXAMPLE:
+       
+        checkio([0, 1, 2, 3, 4, 5]) == 30
+        checkio([1, 3, 5]) == 30
+        checkio([6]) == 36
+        checkio([]) == 0
+            
+    <<
+"""
+
+
+def checkio(array: list) -> int:
+    if not array:
+        return 0
+    else:
+        return sum([array[i] for i in range(0, len(array), 2)]) * array[-1]
+
+
+# These "asserts" are used for self-checking and not for an auto-testing
+assert checkio([0, 1, 2, 3, 4, 5]) == 30, "(0+2+4)*5=30"
+assert checkio([1, 3, 5]) == 30, "(1+5)*5=30"
+assert checkio([6]) == 36, "(6)*6=36"
+assert checkio([]) == 0, "An empty array = 0"