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
|
package main
import (
"fmt"
"os"
"strconv"
"strings"
)
func FileRead(path string) string {
file, err := os.ReadFile(path)
if err != nil {
fmt.Println("Couldn't Read file: ", err)
}
return string(file)
}
func parseInput(data string) [][]int {
var reports [][]int
for _, line := range strings.Split(data, "\n") {
var report []int
if len(line) > 0 {
elements := strings.Split(line, " ")
for _, ele := range elements {
e, err := strconv.Atoi(ele)
if err != nil {
fmt.Println("Couldn't parse string to int ", err)
}
report = append(report, e)
}
reports = append(reports, report)
}
}
return reports
}
func isSafe(report []int) bool {
increasing := report[0] < report[1]
flag := true
for i := range len(report) - 1 {
if increasing {
diff := report[i+1] - report[i]
if report[i] >= report[i+1] || diff > 3 || diff < 1 {
flag = false
break
}
} else {
diff := report[i] - report[i+1]
if report[i] <= report[i+1] || diff > 3 || diff < 1 {
flag = false
break
}
}
}
return flag
}
func solve_part_one(data string) int {
reports := parseInput(data)
cnt := 0
for _, report := range reports {
if isSafe(report) {
cnt += 1
}
}
return cnt
}
func solve_part_two(data string) int {
reports := parseInput(data)
cnt := 0
for _, report := range reports {
if isSafe(report) {
cnt += 1
} else {
for i := range len(report) {
reportTmp := make([]int, len(report))
copy(reportTmp, report)
newReport := append(reportTmp[:i], reportTmp[i+1:]...)
if isSafe(newReport) {
cnt += 1
break
}
}
}
}
return cnt
}
func main() {
test := FileRead("../input/day_2.test")
prod := FileRead("../input/day_2.prod")
fmt.Println("Part_1 test: ", solve_part_one(test))
fmt.Println("Part_1 prod: ", solve_part_one(prod))
fmt.Println("Part_2 test: ", solve_part_two(test))
fmt.Println("Part_2 prod: ", solve_part_two(prod))
}
|
