rm unused file

day5/day2_2.go

@@ -1,143 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"fmt"
-	"os"
-	"strconv"
-	"strings"
-)
-
-const MaxInt = int((^uint(0) >> 1))
-
-type Range struct {
-	dst int
-	src int
-	len int
-}
-
-func (r Range) Map(n int) (int, bool) {
-	if n < r.src || n > (r.src+r.len-1) {
-		return 0, false
-	}
-	return r.dst - r.src + n, true
-}
-
-type Map struct {
-	name   string
-	ranges []Range
-}
-
-func (m *Map) Append(r Range) {
-	m.ranges = append(m.ranges, r)
-}
-
-func (m *Map) Map(n int) int {
-	for i := range m.ranges {
-		x, ok := m.ranges[i].Map(n)
-		if ok {
-			return x
-		}
-	}
-	return n
-}
-
-type Almanac struct {
-	seeds []int
-	maps  []*Map
-}
-
-func (a *Almanac) ParseFile(name string) error {
-	f, err := os.Open(name)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-	scanner := bufio.NewScanner(f)
-	scanner.Scan()
-	seedsStr := scanner.Text()
-	seeds := strToInts(seedsStr[7:])
-	a.seeds = seeds
-	scanner.Scan()
-	var m *Map
-	for scanner.Scan() {
-		s := scanner.Text()
-		s = strings.Trim(s, " \n")
-		if s == "" {
-			a.maps = append(a.maps, m)
-			continue
-		}
-		if s[0] > '9' {
-			m = &Map{
-				name:   s,
-				ranges: []Range{},
-			}
-			continue
-		}
-		nums := strToInts(s)
-		r := Range{
-			dst: nums[0],
-			src: nums[1],
-			len: nums[2],
-		}
-		m.Append(r)
-	}
-	a.maps = append(a.maps, m)
-	return nil
-}
-
-func (a *Almanac) seedToLoc(n int) int {
-	for i := range a.maps {
-		n = a.maps[i].Map(n)
-	}
-	return n
-}
-
-func (a *Almanac) ClosestForSeeds() int {
-	result := MaxInt
-	for _, n := range a.seeds {
-		loc := a.seedToLoc(n)
-		if loc < result {
-			result = loc
-		}
-	}
-	return result
-}
-
-func (a *Almanac) ClosestForRanges() int {
-	result := MaxInt
-	for i := 0; i < (len(a.seeds) - 2); i += 2 {
-		for j := a.seeds[i]; j < (a.seeds[i] + a.seeds[i+1]); j++ {
-			loc := a.seedToLoc(j)
-			if loc < result {
-				result = loc
-			}
-		}
-	}
-	return result
-}
-
-func strToInts(s string) []int {
-	s = strings.Trim(s, " \n")
-	split := strings.Split(s, " ")
-	nums := []int{}
-	for _, x := range split {
-		n, err := strconv.Atoi(x)
-		if err != nil {
-			panic(err)
-		}
-		nums = append(nums, n)
-	}
-	return nums
-}
-
-func main() {
-	a := new(Almanac)
-	a.ParseFile("input.txt")
-
-	x := a.ClosestForSeeds()
-	fmt.Println(x)
-
-	y := a.ClosestForRanges()
-	fmt.Println(y)
-}