1 Commits

Author SHA1 Message Date
xuu
a5ebbe25d0 chore: save hacker rank 2024-06-10 21:26:09 -06:00
132 changed files with 165 additions and 5154 deletions

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...........
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.###.##..#.
..#.#...#..
....#.#....
.##..S####.
.##..#...#.
.......##..
.##.#.####.
.##..##.##.
...........

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package main
import (
"bufio"
_ "embed"
"fmt"
aoc "go.sour.is/advent-of-code"
)
// var log = aoc.Log
func main() { aoc.MustResult(aoc.Runner(runner(64))) }
type result struct {
valuePT1 int
valuePT2 int
}
func (r result) String() string { return fmt.Sprintf("%#v", r) }
func runner(rounds int) func(scan *bufio.Scanner) (*result, error) {
return func(scan *bufio.Scanner) (*result, error) {
var garden garden
for scan.Scan() {
txt := scan.Text()
garden.m = append(garden.m, []rune(txt))
for i, c := range txt {
if c == 'S' {
garden.start[0] = len(garden.m) - 1
garden.start[1] = i
}
}
}
garden.Step(rounds)
return &result{
valuePT1: len(garden.steps[len(garden.steps)-1]),
}, nil
}
}
type garden struct {
start aoc.Point[int]
m [][]rune
steps []aoc.Set[aoc.Point[int]]
}
func (g *garden) Neighbors(p aoc.Point[int]) []aoc.Point[int] {
var neighbors []aoc.Point[int]
for _, n := range []aoc.Point[int]{
{p[0] - 1, p[1]},
{p[0] + 1, p[1]},
{p[0], p[1] - 1},
{p[0], p[1] + 1},
} {
if n[0] >= 0 && n[0] < len(g.m) && n[1] >= 0 && n[1] < len(g.m[0]) && g.m[n[0]][n[1]] != '#' {
neighbors = append(neighbors, n)
}
}
return neighbors
}
func (g *garden) Step(n int) {
if len(g.steps) == 0 {
g.steps = append(g.steps, aoc.NewSet(g.start))
}
for step := range(n) {
g.steps = append(g.steps, aoc.NewSet[aoc.Point[int]]())
for p := range g.steps[step] {
for _, n := range g.Neighbors(p) {
g.steps[step+1].Add(n)
}
}
}
}
func (g garden) String() string {
var b []rune
for i, line := range g.m {
if i == g.start[0] {
line[g.start[1]] = 'X'
}
if steps := len(g.steps) - 1; steps > 0 {
for p := range g.steps[len(g.steps)-1] {
if p[0] == i {
line[p[1]] = 'O'
}
}
}
b = append(b, line...)
b = append(b, '\n')
}
return string(b)
}

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package main
import (
"bufio"
"bytes"
"testing"
_ "embed"
"github.com/matryer/is"
)
//go:embed example.txt
var example []byte
//go:embed input.txt
var input []byte
func TestExample(t *testing.T) {
is := is.New(t)
scan := bufio.NewScanner(bytes.NewReader(example))
result, err := runner(6)(scan)
is.NoErr(err)
t.Log(result)
is.Equal(result.valuePT1, 16)
is.Equal(result.valuePT2, 0)
}
func TestSolution(t *testing.T) {
is := is.New(t)
scan := bufio.NewScanner(bytes.NewReader(input))
result, err := runner(64)(scan)
is.NoErr(err)
t.Log(result)
is.Equal(result.valuePT1, 3709)
is.Equal(result.valuePT2, 0)
}

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jqt: rhn xhk nvd
rsh: frs pzl lsr
xhk: hfx
cmg: qnr nvd lhk bvb
rhn: xhk bvb hfx
bvb: xhk hfx
pzl: lsr hfx nvd
qnr: nvd
ntq: jqt hfx bvb xhk
nvd: lhk
lsr: lhk
rzs: qnr cmg lsr rsh
frs: qnr lhk lsr

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@@ -1,63 +0,0 @@
package main
import (
"bufio"
_ "embed"
"fmt"
"iter"
"strings"
aoc "go.sour.is/advent-of-code"
)
// var log = aoc.Log
func main() { aoc.MustResult(aoc.Runner(run)) }
type result struct {
valuePT1 int
valuePT2 int
}
func (r result) String() string { return fmt.Sprintf("%#v", r) }
func run(scan *bufio.Scanner) (*result, error) {
g := aoc.Graph[string, int]()
var root string
for scan.Scan() {
line := scan.Text()
v, lis, ok := strings.Cut(line, ": ")
if !ok {
continue
}
if root == "" {
root = v
}
for _, l := range strings.Split(lis, " ") {
g.AddEdge(v, l, 1)
g.AddEdge(l, v, 1)
}
}
for i, v := range enumerate(g.BFS(root)) {
fmt.Println(i, v)
}
return &result{}, nil
}
func enumerate[T any](vs iter.Seq[T]) iter.Seq2[int, T] {
i := 0
return func(yield func(int, T) bool) {
for v := range vs {
if !yield(i, v) {
return
}
i++
}
}
}

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@@ -1,41 +0,0 @@
package main
import (
"bufio"
"bytes"
"testing"
_ "embed"
"github.com/matryer/is"
)
//go:embed example.txt
var example []byte
//go:embed input.txt
var input []byte
func TestExample(t *testing.T) {
is := is.New(t)
scan := bufio.NewScanner(bytes.NewReader(example))
result, err := run(scan)
is.NoErr(err)
t.Log(result)
is.Equal(result.valuePT1, 50)
is.Equal(result.valuePT2, 0)
}
func TestSolution(t *testing.T) {
is := is.New(t)
scan := bufio.NewScanner(bytes.NewReader(input))
result, err := run(scan)
is.NoErr(err)
t.Log(result)
is.Equal(result.valuePT1, 0)
is.Equal(result.valuePT2, 0)
}

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3 4
4 3
2 5
1 3
3 9
3 3

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@@ -1,86 +0,0 @@
package main
import (
"bufio"
_ "embed"
"fmt"
"iter"
"slices"
"sort"
aoc "go.sour.is/advent-of-code"
)
// var log = aoc.Log
func main() { aoc.MustResult(aoc.Runner(run)) }
type result struct {
valuePT1 int
valuePT2 int
}
func (r result) String() string { return fmt.Sprintf("%#v", r) }
func run(scan *bufio.Scanner) (*result, error) {
var (
left []int
right []int
)
for scan.Scan() {
txt := scan.Text()
var l, r int
_, err := fmt.Sscanf(txt, "%d %d", &l, &r)
if err != nil {
return nil, err
}
left = append(left, l)
right = append(right, r)
}
sort.Ints(left)
sort.Ints(right)
result := &result{}
result.valuePT1 = aoc.Reduce(func(i int, z pair[int, int], sum int) int {
return sum + aoc.ABS(z.L-z.R)
}, 0, zip(slices.Values(left), slices.Values(right)))
rmap := aoc.Reduce(func(i int, z int, m map[int]int) map[int]int {
m[z]++
return m
}, make(map[int]int), slices.Values(right))
for _, v := range left {
if r, ok := rmap[v]; ok {
result.valuePT2 += v*r
}
}
return result, nil
}
type pair[L, R any] struct {
L L
R R
}
func zip[L, R any](l iter.Seq[L], r iter.Seq[R]) iter.Seq[pair[L,R]] {
return func(yield func(pair[L, R]) bool) {
pullR, stop := iter.Pull(r)
defer stop()
for l := range l {
r, _ := pullR()
if !yield(pair[L, R]{L: l, R: r}) {
return
}
}
}
}

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@@ -1,41 +0,0 @@
package main
import (
"bufio"
"bytes"
"testing"
_ "embed"
"github.com/matryer/is"
)
//go:embed example.txt
var example []byte
//go:embed input.txt
var input []byte
func TestExample(t *testing.T) {
is := is.New(t)
scan := bufio.NewScanner(bytes.NewReader(example))
result, err := run(scan)
is.NoErr(err)
t.Log(result)
is.Equal(result.valuePT1, 11)
is.Equal(result.valuePT2, 31)
}
func TestSolution(t *testing.T) {
is := is.New(t)
scan := bufio.NewScanner(bytes.NewReader(input))
result, err := run(scan)
is.NoErr(err)
t.Log(result)
is.Equal(result.valuePT1, 2756096)
is.Equal(result.valuePT2, 23117829)
}

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@@ -1,6 +0,0 @@
7 6 4 2 1
1 2 7 8 9
9 7 6 2 1
1 3 2 4 5
8 6 4 4 1
1 3 6 7 9

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@@ -1,88 +0,0 @@
package main
import (
"bufio"
_ "embed"
"fmt"
"strings"
aoc "go.sour.is/advent-of-code"
)
// var log = aoc.Log
func main() { aoc.MustResult(aoc.Runner(run)) }
type result struct {
valuePT1 int
valuePT2 int
}
func (r result) String() string { return fmt.Sprintf("%#v", r) }
func run(scan *bufio.Scanner) (*result, error) {
sum := 0
sum2 := 0
for scan.Scan() {
txt := scan.Text()
row := aoc.ReadStringToInts(strings.Fields(txt))
good, bad := testSafety(row)
if good {
sum++
sum2++
continue
}
for i := max(0, bad-1); i < min(bad+2, len(row)); i++ {
arr := cut(i, row)
good, _ := testSafety(arr)
if good {
sum2++
break
}
}
}
return &result{valuePT1: sum, valuePT2: sum2}, nil
}
func testSafety(row []int) (bool, int) {
good := true
bad := -1
increasing := false
decreasing := false
for i, v := range row[1:] {
if v > row[i] {
increasing = true
}
if v < row[i] {
decreasing = true
}
if difference := aoc.ABS(v - row[i]); difference < 1 || difference > 3 {
good = false
bad = i
break
}
if increasing && decreasing {
good = false
bad = i
break
}
}
return good, bad
}
func cut(i int, values []int) []int {
arr := make([]int, 0, len(values))
arr = append(arr, values[:i]...)
arr = append(arr, values[i+1:]...)
return arr
}

View File

@@ -1,43 +0,0 @@
package main
import (
"bufio"
"bytes"
"testing"
_ "embed"
"github.com/matryer/is"
)
//go:embed example.txt
var example []byte
//go:embed input.txt
var input []byte
func TestExample(t *testing.T) {
is := is.New(t)
scan := bufio.NewScanner(bytes.NewReader(example))
result, err := run(scan)
is.NoErr(err)
t.Log(result)
is.Equal(result.valuePT1, 2)
is.Equal(result.valuePT2, 4)
}
func TestSolution(t *testing.T) {
is := is.New(t)
scan := bufio.NewScanner(bytes.NewReader(input))
result, err := run(scan)
is.NoErr(err)
t.Log(result)
is.Equal(result.valuePT1, 486)
is.True(result.valuePT2 > 517)
is.True(result.valuePT2 > 523)
is.Equal(result.valuePT2, 540)
}

View File

@@ -9,6 +9,7 @@ import (
aoc "go.sour.is/advent-of-code"
)
func TestList(t *testing.T) {
is := is.New(t)
@@ -55,6 +56,7 @@ func TestPriorityQueue(t *testing.T) {
is.True(v == nil)
}
func ExamplePriorityQueue() {
type memo struct {
pt int
@@ -72,7 +74,7 @@ func ExamplePriorityQueue() {
}
pq := aoc.PriorityQueue(less)
visited := aoc.NewSet([]int{}...)
visited := aoc.Set([]int{}...)
dist := aoc.DefaultMap[int](int(^uint(0) >> 1))
dist.Set(0, 0)
@@ -115,7 +117,25 @@ func ExamplePriorityQueue() {
// point 5 is 22 steps away.
// point 6 is 19 steps away.
}
func TestGraph(t *testing.T) {
is := is.New(t)
var adjacencyList = map[int][]int{
2: {3, 5, 1},
1: {2, 4},
3: {6, 2},
4: {1, 5, 7},
5: {2, 6, 8, 4},
6: {3, 0, 9, 5},
7: {4, 8},
8: {5, 9, 7},
9: {6, 0, 8},
}
g := aoc.Graph(aoc.WithAdjacencyList[int, int](adjacencyList))
is.Equal(g.Neighbors(1), []int{2, 4})
is.Equal(map[int][]int(g.AdjacencyList()), adjacencyList)
}
func ExampleFibHeap() {
type memo struct {
@@ -134,7 +154,7 @@ func ExampleFibHeap() {
}
pq := aoc.FibHeap(less)
visited := aoc.NewSet([]int{}...)
visited := aoc.Set([]int{}...)
dist := aoc.DefaultMap[int](int(^uint(0) >> 1))
dist.Set(0, 0)

View File

@@ -4,7 +4,6 @@ import (
"bufio"
_ "embed"
"fmt"
"slices"
"strings"
aoc "go.sour.is/advent-of-code"
@@ -63,7 +62,7 @@ func run(scan *bufio.Scanner) (*result, error) {
func(i int, v int, counts [3]int) [3]int {
counts[v]++
return counts
}, [3]int{}, slices.Values(maps.Values(memo)))
}, [3]int{}, maps.Values(memo)...)
// fmt.Println(i, counts)
i = 1_000_000_000 - (1_000_000_000-counts[0]-counts[1])%counts[2]

View File

@@ -32,14 +32,14 @@ func run(scan *bufio.Scanner) (*result, error) {
r.valuePT1 = aoc.Reduce(func(i int, t string, sum int) int {
sum += hash(t)
return sum
}, 0, slices.Values(ops))
}, 0, ops...)
}
var boxen boxes
boxen = aoc.Reduce(func(i int, op string, b boxes) boxes {
return b.Op(op)
}, boxen, slices.Values(ops))
}, boxen, ops...)
r.valuePT2 = boxen.Sum()

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