-
Notifications
You must be signed in to change notification settings - Fork 0
/
order_weight.rb
51 lines (44 loc) · 1.5 KB
/
order_weight.rb
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
# You are provided a string containing a list of positive integers separated by a space (" "). Take each value and calculate the sum of its digits, which we call its
# "weight". Then return the list in ascending order by weight, as a string joined by spaces.
# For example 99 will have "weight" 18, 100 will have "weight" 1. In the output 100 will come before 99.
# Example:
# "56 65 74 100 99 68 86 180 90" ordered by numbers weights becomes: "100 180 90 56 65 74 68 86 99"
def order_weight(strng)
return 'empty string' if strng.empty?
split_arr = strng.split(' ')
temp = []
sums_hash = {}
split_arr.each do |i|
val = i.split('').map(&:to_i).sum
sums_hash[i] = val
end
sorted = sums_hash.sort_by { |_, v| v }
len = sorted.length - 1
for i in 0...len
if sorted[i][1] == sorted[i + 1][1] && (sorted[i] != nil || sorted[i + 1] != nil)
first = split_arr.find_index(sorted[i][0])
second = split_arr.find_index(sorted[i + 1][0])
if second < first
tem = sorted[i]
sorted[i] = sorted[i + 1]
sorted[i + 1] = tem
end
end
temp << sorted[i][0]
end
temp << sorted.last[0]
temp.join(' ')
end
val = '56 65 74 100 99 68 86 180 90'
order_weight("11 11 2000 10003 22 123 1234000 44444444 9999")
def order_weight_2(strng)
split_arr = strng.split(' ')
temp = []
sums_hash = {}
split_arr.each do |i|
val = i.split('').map(&:to_i).sum
sums_hash[i] = val
end
sums_hash.sort_by { |_, v| v }.each { |i| temp << i[0] }
temp.join(' ')
end