my_list = [13, 29, 24, 18, 40, 15]

print("列表是:")
print(my_list)

K = 3

my_list = sorted(my_list)

index = 0

while index < len(my_list) - 1:
   if my_list[index] + K > my_list[index + 1]:
      del my_list[index + 1]
   else:
      index += 1

print("结果是:")
print(my_list)

列表是:
[13, 29, 24, 18, 40, 15]
结果为:
[13, 18, 24, 29, 40]