1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
#!/usr/bin/env ruby
=begin
-----------------------------------------
AUTHOR: Robert DiCicco
DATE : 2023-05-22
Challenge 218 Maximum Product ( Ruby )
-----------------------------------------
=end
lists = [[3, 1, 2],[4, 1, 3, 2],[-1, 0, 1, 3, 1],[-8, 2, -9, 0, -4, 3]]
maxval = 0
maxthree = []
lists.each do |lst|
puts("Input: @list = #{lst}")
ax = lst.combination(3).to_a.sort
ax.each do |c|
prod = c[0] * c[1] * c[2]
if prod > maxval
maxval = prod
maxthree = c.sort
end
end
puts("Output: #{maxval}")
puts("#{maxthree[0]} x #{maxthree[1]} x #{maxthree[2]} = #{maxval}")
maxval = 0
maxthree = []
puts("")
end
=begin
-----------------------------------------
SAMPLE OUTPUT
ruby .\MaxProduct.rb
Input: @list = [3, 1, 2]
Output: 6
1 x 2 x 3 = 6
Input: @list = [4, 1, 3, 2]
Output: 24
2 x 3 x 4 = 24
Input: @list = [-1, 0, 1, 3, 1]
Output: 3
1 x 1 x 3 = 3
Input: @list = [-8, 2, -9, 0, -4, 3]
Output: 216
-9 x -8 x 3 = 216
-----------------------------------------
=end
|
