1/*
2Redistribution and use in source and binary forms, with or without
3modification, are permitted provided that the following conditions are met:
4
5    * Redistributions of source code must retain the above copyright
6    notice, this list of conditions and the following disclaimer.
7
8    * Redistributions in binary form must reproduce the above copyright
9    notice, this list of conditions and the following disclaimer in the
10    documentation and/or other materials provided with the distribution.
11
12    * Neither the name of "The Computer Language Benchmarks Game" nor the
13    name of "The Computer Language Shootout Benchmarks" nor the names of
14    its contributors may be used to endorse or promote products derived
15    from this software without specific prior written permission.
16
17THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27POSSIBILITY OF SUCH DAMAGE.
28*/
29
30/* The Computer Language Benchmarks Game
31 * http://shootout.alioth.debian.org/
32 *
33 * contributed by The Go Authors.
34 */
35
36package main
37
38import (
39	"bufio"
40	"bytes"
41	"fmt"
42	"io/ioutil"
43	"os"
44	"runtime"
45	"sort"
46)
47
48func count(data string, n int) map[string]int {
49	counts := make(map[string]int)
50	top := len(data) - n
51	for i := 0; i <= top; i++ {
52		s := data[i : i+n]
53		counts[s]++
54	}
55	return counts
56}
57
58func countOne(data string, s string) int {
59	return count(data, len(s))[s]
60}
61
62type kNuc struct {
63	name  string
64	count int
65}
66
67type kNucArray []kNuc
68
69func (kn kNucArray) Len() int      { return len(kn) }
70func (kn kNucArray) Swap(i, j int) { kn[i], kn[j] = kn[j], kn[i] }
71func (kn kNucArray) Less(i, j int) bool {
72	if kn[i].count == kn[j].count {
73		return kn[i].name > kn[j].name // sort down
74	}
75	return kn[i].count > kn[j].count
76}
77
78func sortedArray(m map[string]int) kNucArray {
79	kn := make(kNucArray, len(m))
80	i := 0
81	for k, v := range m {
82		kn[i] = kNuc{k, v}
83		i++
84	}
85	sort.Sort(kn)
86	return kn
87}
88
89func printKnucs(a kNucArray) {
90	sum := 0
91	for _, kn := range a {
92		sum += kn.count
93	}
94	for _, kn := range a {
95		fmt.Printf("%s %.3f\n", kn.name, 100*float64(kn.count)/float64(sum))
96	}
97	fmt.Print("\n")
98}
99
100func main() {
101	runtime.GOMAXPROCS(4)
102	in := bufio.NewReader(os.Stdin)
103	three := []byte(">THREE ")
104	for {
105		line, err := in.ReadSlice('\n')
106		if err != nil {
107			fmt.Fprintln(os.Stderr, "ReadLine err:", err)
108			os.Exit(2)
109		}
110		if line[0] == '>' && bytes.Equal(line[0:len(three)], three) {
111			break
112		}
113	}
114	data, err := ioutil.ReadAll(in)
115	if err != nil {
116		fmt.Fprintln(os.Stderr, "ReadAll err:", err)
117		os.Exit(2)
118	}
119	// delete the newlines and convert to upper case
120	j := 0
121	for i := 0; i < len(data); i++ {
122		if data[i] != '\n' {
123			data[j] = data[i] &^ ' ' // upper case
124			j++
125		}
126	}
127	str := string(data[0:j])
128
129	var arr1, arr2 kNucArray
130	countsdone := make(chan bool)
131	go func() {
132		arr1 = sortedArray(count(str, 1))
133		countsdone <- true
134	}()
135	go func() {
136		arr2 = sortedArray(count(str, 2))
137		countsdone <- true
138	}()
139
140	interests := []string{"GGT", "GGTA", "GGTATT", "GGTATTTTAATT", "GGTATTTTAATTTATAGT"}
141	results := make([]chan string, len(interests))
142	for i, s := range interests {
143		ch := make(chan string)
144		results[i] = ch
145		go func(result chan string, ss string) {
146			result <- fmt.Sprintf("%d %s\n", countOne(str, ss), ss)
147		}(ch, s)
148	}
149	<-countsdone
150	<-countsdone
151	printKnucs(arr1)
152	printKnucs(arr2)
153	for _, rc := range results {
154		fmt.Print(<-rc)
155	}
156
157}
158