-
Notifications
You must be signed in to change notification settings - Fork 3
/
Program.fs
101 lines (75 loc) · 3.59 KB
/
Program.fs
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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
open System
let (^) char string = sprintf "%c%s" char string
let longestCommonSubsequenceSolve original edited =
let rec solve (original:string) (edited:string) indexOriginal indexEdited =
let solve' = solve original edited
let solveWhenDifferentChars indexOriginal indexEdited=
let resultA : string = solve' (indexOriginal+1) indexEdited
let resultB : string = solve' indexOriginal (indexEdited+1)
if resultA.Length > resultB.Length
then resultA
else resultB
match original, edited with
| original', edited'
when indexOriginal = original'.Length || indexEdited = edited'.Length ->
String.Empty
| original', edited'
when original'.Chars(indexOriginal) = edited'.Chars(indexEdited) ->
original'.Chars(indexOriginal) ^ (solve' (indexOriginal+1) (indexEdited+1) )
| _ -> solveWhenDifferentChars indexOriginal indexEdited
solve original edited 0 0
let longestCommonSubsequenceSolveWithCache (original:string) (edited:string) =
let rec solveWithCache
(original:string) (edited:string) (cache:string[,])
indexOriginal indexEdited =
let solveWithCache' = solveWithCache original edited cache
let cacheResult indexOriginal indexEdited value =
cache.[indexOriginal,indexEdited] <- value
value
let cacheResult' = cacheResult indexOriginal indexEdited
let solveWhenDifferentCharsWithCache indexOriginal indexEdited=
let resultA : string = solveWithCache' (indexOriginal+1) indexEdited
let resultB : string = solveWithCache' indexOriginal (indexEdited+1)
if resultA.ToString().Length >= resultB.ToString().Length
then resultA
else resultB
match original, edited with
| original', edited'
when indexOriginal = original'.Length || indexEdited = edited'.Length ->
String.Empty
| original', edited'
when cache.[indexOriginal, indexEdited] <> String.Empty ->
cache.[indexOriginal, indexEdited]
| original', edited'
when original'.Chars(indexOriginal) = edited'.Chars(indexEdited) ->
cacheResult'
(original'.Chars(indexOriginal)
^ (solveWithCache' (indexOriginal+1) (indexEdited+1)) )
| _ ->
cacheResult' (solveWhenDifferentCharsWithCache indexOriginal indexEdited)
let mutable cache =
Array2D.init original.Length edited.Length
(fun linha coluna -> String.Empty)
solveWithCache original edited cache 0 0
[<EntryPoint>]
let main argv =
longestCommonSubsequenceSolveWithCache "BMOAL" "BLOA"
|> Console.WriteLine
longestCommonSubsequenceSolveWithCache "let inicio = 10" "let inicio = 125"
|> Console.WriteLine
longestCommonSubsequenceSolveWithCache
"""let solveWhenDifferentChars indexOriginal indexEdited=
let resultA : string = solve' (indexOriginal+1) indexEdited
let resultB : string = solve' indexOriginal (indexEdited+1)
if resultA.Length > resultB.Length
then resultA
else resultB"""
"""let solveWhenDifferentChars indexOriginal indexEdited=
let resultA = solve' (indexOriginal+1) indexEdited
let resultB = solve' indexOriginal (indexEdited+1)
if resultA.ToString().Length > resultB.ToString().Length
then resultA
else resultB"""
|> Console.WriteLine
Console.ReadKey() |> ignore
0