update

practica/stepik/stepik_tasks/sum_num_nearby.py

@@ -1,36 +1,53 @@
 # вариант решения 1
-a = input().split()
-len_a = len(a) - 1
-for index, number in enumerate(a):
-   if len_a == 0:
-      print (number)
-   else:
-      if index == 0:
-         S = int(a[-1]) + int(a[1])
-         b = str(S)
-      elif index != 0 and index != int(len_a) :
-         n_index_0 = int(int(a.index(number)) + 1)
-         n_index_2 = int(int(a.index(number)) - 1)
-         n_0 = a[n_index_0]
-         N_2 = a[n_index_2]
-         S1 = int(n_0) + int(N_2)
-         b += " " + str(S1)
-      elif index == int(len_a):
-         S2 = int(a[0]) + int(a[-2])
-         b += " " + str(S2)
-         print (b)
+# a = input().split()
+# len_a = len(a) - 1
+# for index, number in enumerate(a):
+#    if len_a == 0:
+#       print (number)
+#    else:
+#       if index == 0:
+#          S = int(a[-1]) + int(a[1])
+#          b = str(S)
+#       elif index != 0 and index != int(len_a) :
+#          n_index_0 = int(int(a.index(number)) + 1)
+#          n_index_2 = int(int(a.index(number)) - 1)
+#          n_0 = a[n_index_0]
+#          N_2 = a[n_index_2]
+#          S1 = int(n_0) + int(N_2)
+#          b += " " + str(S1)
+#       elif index == int(len_a):
+#          S2 = int(a[0]) + int(a[-2])
+#          b += " " + str(S2)
+#          print (b)
  
 
 # вариант решения 2 -короче
-initial_list = input().split()
-sum_list = []
-left_index = -1
-right_index = -len(initial_list) + 1
-middle_index = 0
-while middle_index < len(initial_list):
-    sum_list.append(initial_list[left_index] + initial_list[right_index])
-    left_index += 1
-    right_index += 1
-    middle_index += 1
-print(sum_list)
-      
+# initial_list = input().split()
+# sum_list = []
+# left_index = -1
+# right_index = -len(initial_list) + 1
+# middle_index = 0
+# while middle_index < len(initial_list):
+#     sum_list.append(initial_list[left_index] + initial_list[right_index])
+#     left_index += 1
+#     right_index += 1
+#     middle_index += 1
+# print(sum_list)
+      
+# вариант решения 3
+a = [int(item) for item in input().split()]
+a2 = []
+for i in range(len(a)):
+    if len(a) == 1:
+        print(a[0])
+        break
+    else:
+        if i == 0:
+            a2.append(a[-1] + a[i + 1])
+        elif i > 0  and i != len(a) - 1:
+            a2.append(a[i - 1] + a[i + 1])
+        else:
+            a2.append(a[i - 1] + a[0])
+if a2 != 0:
+    for i in a2:
+        print(i, end=' ')