chore: save hacker rank

README.md.sig

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-#####.#########.#.#.###.#########v#.#.###.#.###.#.#######.#.#.###.###.#.#####.###.#.#.#.#.#.#.#.#.#.###.#.#.#.###.#.###.###.#################
-#.....#.......#.#.#.###...#...#.>.>.#...#.#.#...#...#.....#...###...#.#.....#.#...#.#.#.#.#.#.#.#.#...#.#.#.#.#...#.....#...#.....#.....#####
-#.#####.#####.#.#.#.#####.#.#.#.#######.#.#.#.#####.#.#############.#.#####v#.#.###.#.#.#.#.#.#.#.###v#.#.#.#.#.#########.###.###.#.###.#####
-#.....#.#.....#.#.#.#####.#.#...#.......#.#.#...#...#.........###...#.#...>.>.#.#...#.#.#...#.#.#...>.>.#.#.#.#.........#...#.#...#.###...###
-#####.#.#.#####.#.#.#####.#.#####.#######.#.###.#.###########v###.###.#.#######.#.###.#.#####.#.#########.#.#.#########.###.#.#.###.#####.###
-#####...#.....#.#...#.....#.....#.......#.#...#.#...#...#...>.>.#.###.#.....###.#.###.#.###...#.......#...#.#.#.......#.#...#.#.....#...#...#
-#############.#.#####.#########.#######.#.###.#.###.#.#.#.#####.#.###.#####.###.#.###.#.###.#########.#.###.#.#.#####.#.#.###.#######.#.###.#
-#.............#...#...#...#.....#.......#.#...#...#.#.#.#.....#.#.#...#.....#...#...#.#...#.....#.....#...#.#.#.....#.#.#...#.#.......#.....#
-#.###############.#.###.#.#.#####.#######.#.#####.#.#.#.#####.#.#.#.###.#####.#####.#.###.#####.#.#######.#.#.#####.#.#.###.#.#.#############
-#.................#.....#...#####.........#.......#...#.......#...#.....#####.......#.....#####...#######...#.......#...###...#.............#
-###########################################################################################################################################.#

day23/main.go

@@ -1,236 +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) {
-	var m aoc.Map[int16, rune]
-
-	start := Point{0, 0}
-	target := Point{0, 0}
-	var text string
-	for scan.Scan() {
-		text = scan.Text()
-		if start == target {
-			start[1] = int16(strings.IndexRune(text, '.'))
-		}
-		m = append(m, []rune(text))
-	}
-	target[0] = int16(len(m) - 1)
-	target[1] = int16(strings.IndexRune(text, '.'))
-
-	result := &result{}
-
-	result.valuePT1 = search(&graph{m: m, start: start, target: target, neighbors: part1nbs})
-	result.valuePT2 = search(&graph{m: m, start: start, target: target, neighbors: part2nbs})
-
-	return result, nil
-}
-
-type Point = aoc.Point[int16]
-type Map = aoc.Map[int16, rune]
-
-// diretion of path steps
-type direction int8
-
-var (
-	U = Point{-1, 0}
-	R = Point{0, 1}
-	D = Point{1, 0}
-	L = Point{0, -1}
-)
-
-var directions = []Point{U, R, D, L}
-
-var dirIDX = func() map[Point]direction {
-	m := make(map[Point]direction, len(directions))
-	for k, v := range directions {
-		m[v] = direction(k)
-	}
-	return m
-}()
-
-var arrows = []rune{'^', '>', 'v', '<'}
-
-var arrowIDX = func() map[rune]Point {
-	m := make(map[rune]Point, len(arrows))
-	for k, v := range arrows {
-		m[v] = directions[k]
-	}
-	return m
-}()
-
-// position on the map
-type position struct {
-	loc       Point
-	direction Point
-}
-
-func (p position) step(to Point) position {
-	return position{p.loc.Add(to), to}
-}
-
-// implements FindPath graph interface
-type graph struct {
-	m      Map
-	start  Point
-	target Point
-
-	neighbors func(g *graph, current position) []position
-}
-
-// Neighbors returns valid steps from given position. if at target returns none.
-func (g *graph) Neighbors(current position) []position {
-	return g.neighbors(g, current)
-}
-
-// Cost calculates heat cost to neighbor from map
-func (g *graph) Cost(a, b position) int16 {
-	return 1
-}
-
-func (g *graph) Target(a position, c int16) bool {
-	return a.loc == g.target
-}
-
-func (g *graph) Seen(a position) position {
-	a.direction = Point{}
-	return a
-}
-
-func match[T comparable](match T, lis ...T) bool {
-	for _, b := range lis {
-		if b == match {
-			return true
-		}
-	}
-
-	return false
-}
-
-func search(g *graph) int {
-	costs, paths := aoc.FindPaths[int16, position](g, position{loc: g.start}, position{loc: g.target})
-
-	for i, path := range paths {
-		log("path length = ", costs[i])
-		printGraph(g.m, path)
-	}
-
-	return int(aoc.Max(0, costs...))
-}
-
-// printGraph with the path overlay
-func printGraph(m Map, path []position) {
-	pts := make(map[Point]position, len(path))
-	for _, pt := range path {
-		pts[pt.loc] = pt
-	}
-
-	for r, row := range m {
-		for c, x := range row {
-			if _, ok := pts[Point{int16(r), int16(c)}]; ok {
-				if x == '.' {
-					fmt.Print("*")
-				} else {
-					fmt.Print(string(x))
-				}
-				continue
-			}
-			fmt.Print(".")
-			_ = x
-			// fmt.Print(string(x))
-		}
-		fmt.Println("")
-	}
-	fmt.Println("")
-}
-
-func opposite(d Point) Point {
-	return directions[(dirIDX[d]+2)%4]
-}
-
-
-func part1nbs(g *graph, current position) []position {
-	var nbs []position
-
-	if current.loc == g.start {
-		return []position{
-			{current.loc.Add(D), D},
-		}
-	}
-
-	if current.loc == g.target {
-		return nil
-	}
-
-	// only one direction on arrow.
-	_, r, _ := g.m.Get(current.loc)
-	if match(r, arrows...) {
-		to := arrowIDX[r]
-		if next := current.step(to); g.m.Valid(next.loc) {
-			_, r, _ := g.m.Get(next.loc)
-			d := arrows[(dirIDX[to]+2)%4] // flow from opposite direction
-			if !match(r, rune(d), '#') {
-				nbs = append(nbs, next)
-			}
-		}
-		return nbs
-	}
-
-	for _, to := range directions {
-		if next := current.step(to); g.m.Valid(next.loc) {
-			_, r, _ := g.m.Get(next.loc)
-			d := arrows[(dirIDX[to]+2)%4] // flow from opposite direction
-			if !match(r, rune(d), '#') {
-				nbs = append(nbs, next)
-			}
-		}
-	}
-	return nbs
-}
-
-func part2nbs(g *graph, current position) []position {
-	var nbs []position
-
-	if current.loc == g.start {
-		return []position{
-			{current.loc.Add(D), D},
-		}
-	}
-
-	if current.loc == g.target {
-		return nil
-	}
-
-	for _, to := range directions {
-		if next := current.step(to); g.m.Valid(next.loc) {
-			if next.direction == opposite(current.direction) {
-				continue
-			}
-			_, r, _ := g.m.Get(next.loc)
-			if r == '#' {
-				continue
-			}
-
-			nbs = append(nbs, next)
-		}
-	}
-	return nbs
-}

day23/main_test.go

@@ -1,42 +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, 94)
-	is.Equal(result.valuePT2, 154)
-}
-
-// 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.True(result.valuePT1 > 1918)
-// 	is.Equal(result.valuePT1, 2074)
-// 	is.Equal(result.valuePT2, 0)
-// }

go.mod

@@ -1,8 +1,6 @@
 module go.sour.is/advent-of-code
 
-go 1.21.4
+go 1.22.0
-
-toolchain go1.21.5
 
 require (
 	github.com/matryer/is v1.4.1

grids.go

@@ -111,8 +111,8 @@ func (m *cmap[C, N]) String() string {
 
 	for k, nbs := range m.neighbors {
 		fmt.Fprintln(b, k)
-		for to, v := range nbs {
+		for to, c := range nbs {
-			fmt.Fprintln(b, "  ", to, v)
+			fmt.Fprintln(b, "  ", to, c)
 		}
 	}
 
@@ -132,19 +132,18 @@ func CompressMap[C number, N comparable](p pather[C, N], start N) pather[C, N] {
 		}
 
 		nbs := p.Neighbors(n)
-		if len(nbs) == 2{
+		if len(nbs) == 2 {
 			a, b := nbs[0], nbs[1]
 			if to, ok := visited[a]; ok {
 				to[b] = to[n] + p.Cost(n, b)
 				delete(to, n)
 				visited[a] = to
-				continue
 			} else if to, ok := visited[b]; ok {
 				to[a] = to[n] + p.Cost(n, a)
 				delete(to, n)
 				visited[b] = to
-				continue
 			}
+			continue
 		}
 
 		visited[n] = make(map[N]C)

hacker01/hacker.go

@@ -0,0 +1,69 @@
+package main
+
+import "fmt"
+import "os"
+import "bufio"
+import "strconv"
+import "strings"
+
+
+var input1 = strings.NewReader(`
+6
+1 2 5 3 6 4
+`)
+
+var input2 = strings.NewReader(`
+15
+1 14 3 7 4 5 15 6 13 10 11 2 12 8 9
+`)
+
+var input3 = os.Stdin
+
+func main() {
+	var length int
+    var tree *node
+    
+    scanner := bufio.NewScanner(input1)
+    for scanner.Scan() {
+		if length == 0 {
+			length, _ = strconv.Atoi(scanner.Text())
+			continue
+		}
+
+        for _, txt := range strings.Fields(scanner.Text()) {		
+			if v, err := strconv.Atoi(txt); err == nil {
+                tree = insert(tree, &node{value: v})
+            }
+        }
+    }
+
+    foo(input{1, "hi"})
+    
+    fmt.Println(tree)
+}
+
+type node struct {
+    value int
+    left *node
+    right *node
+}
+
+func insert(root, n *node) *node {
+        if root == nil {
+            return n
+        }
+        if root.value > n.value {
+            root.left = insert(root.left, n)
+            return root
+        }
+        root.right = insert(root.right, n)
+        return root
+}
+
+func (n *node) String() string {
+    if n == nil { return "" }
+    return fmt.Sprintf("%v %v%v", n.value, n.left.String(), n.right.String())
+}
+
+type input struct{a int; b string}
+func foo (in input) {}

hacker02/hacker.go

@@ -0,0 +1,109 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"os"
+	"strconv"
+	"strings"
+
+	aoc "go.sour.is/advent-of-code"
+)
+
+/*
+ * Complete the 'cookies' function below.
+ *
+ * The function is expected to return an INTEGER.
+ * The function accepts following parameters:
+ *  1. INTEGER k
+ *  2. INTEGER_ARRAY A
+ */
+
+func cookies(k int32, A []int32) int32 {
+	var i int32
+	// fmt.Println(" ", A)
+	// sort.Slice(A, func(i, j int) bool { return A[j] < A[i]})
+	// for A[len(A)-1] < k {
+	//     if len(A) < 2 {
+	//         return -1
+	//     }
+	//     // fmt.Println(" ", A[len(A)-1], " + 2x", A[len(A)-2], 2*A[len(A)-2] + A[len(A)-1])
+	//     A[len(A)-2] = 2*A[len(A)-2] + A[len(A)-1]
+	//     A = A[:len(A)-1]
+
+	//     for j:=len(A)-1; j>0 && A[j] > A[j-1]; j-- {
+	//         A[j], A[j-1] = A[j-1], A[j]
+	//     }
+	//     i++
+	//     fmt.Println("A", len(A), i)
+	// }
+
+	pq := aoc.FibHeap(func(a, b *int32) bool { return *a < *b })
+	for i := range A {
+		pq.Insert(&A[i])
+	}
+	for !pq.IsEmpty() && *pq.GetMin() < k {
+		first := *pq.ExtractMin()
+		second := *pq.ExtractMin()
+		third := first + 2*second
+
+		pq.Insert(&third)
+		i++
+	}
+
+	return i
+}
+
+func main() {
+	reader := bufio.NewReaderSize(os.Stdin, 16*1024*1024)
+
+	stdout, err := os.Create("/dev/stderr")
+	checkError(err)
+
+	defer stdout.Close()
+
+	writer := bufio.NewWriterSize(stdout, 16*1024*1024)
+
+	firstMultipleInput := strings.Split(strings.TrimSpace(readLine(reader)), " ")
+
+	nTemp, err := strconv.ParseInt(firstMultipleInput[0], 10, 64)
+	checkError(err)
+	n := int32(nTemp)
+
+	kTemp, err := strconv.ParseInt(firstMultipleInput[1], 10, 64)
+	checkError(err)
+	k := int32(kTemp)
+
+	ATemp := strings.Split(strings.TrimSpace(readLine(reader)), " ")
+
+	var A []int32
+
+	for i := 0; i < int(n); i++ {
+		AItemTemp, err := strconv.ParseInt(ATemp[i], 10, 64)
+		checkError(err)
+		AItem := int32(AItemTemp)
+		A = append(A, AItem)
+	}
+
+	result := cookies(k, A)
+
+	fmt.Fprintf(writer, "%d\n", result)
+
+	writer.Flush()
+}
+
+func readLine(reader *bufio.Reader) string {
+	str, _, err := reader.ReadLine()
+	if err == io.EOF {
+		return ""
+	}
+
+	return strings.TrimRight(string(str), "\r\n")
+}
+
+func checkError(err error) {
+	if err != nil {
+		panic(err)
+	}
+}

hacker02/other.txt

@@ -0,0 +1,2 @@
+8 90
+13 47 74 12 89 74 18 38

ranger/channel.go

@@ -0,0 +1,15 @@
+package main
+
+
+func countChan(n int) <-chan int {
+	ch := make(chan int)
+
+	go func() {
+		for i := range n {
+			ch <- i
+		}
+		close(ch)
+	}()
+
+	return ch
+}

ranger/range.go

@@ -0,0 +1,84 @@
+package main
+
+// export GOEXPERIMENT=rangefunc
+import "iter"
+
+func Step(start, stop, step int) iter.Seq[int] {
+	if step < 0 {
+		return func(yield func(int) bool) {
+			for i := start; i <= start && i > stop; i += step {
+				next := yield(i)
+				if !next {
+					return
+				}
+			}
+		}
+	}
+
+	if step > 0 {
+		return func(yield func(int) bool) {
+			for i := start; i >= start && i < stop; i += step {
+				next := yield(i)
+				if !next {
+					println("stopped!")
+					return
+				}
+			}
+		}
+	}
+
+	return func(yield func(int) bool) { yield(start) }
+}
+
+func Fib() iter.Seq[uint] {
+	return func(yield func(uint) bool) {
+		previous, value := uint(1), uint(1)
+		next := yield(value)
+		for next {
+			next = yield(value)
+			value, previous = value+previous, value
+			if value < previous {
+				return
+			}
+		}
+	}
+}
+
+func Fizzbuzzed[T int | uint](from iter.Seq[T]) iter.Seq2[T, string] {
+	pull, stop := iter.Pull(from)
+	return func(yield func(T, string) bool) {
+		defer stop()
+		for {
+			var fizzbuzz string
+			p, ok := pull()
+			if !ok {
+				return
+			}
+			if p%3 == 0 {
+				fizzbuzz = "fizz"
+			}
+			if p%5 == 0 {
+				fizzbuzz += "buzz"
+			}
+			if !yield(p, fizzbuzz) {
+				return
+			}
+		}
+	}
+}
+
+// func main() {
+// 	for i, v := range Fizzbuzzed(Fib()) {
+// 		println(i, v)
+// 	}
+// }
+
+func countScan(n int) (func() bool, func() int) {
+	pos := -1
+	return func() bool {
+			pos++
+			return pos < n
+		}, func() int {
+			return pos
+		}
+}

ranger/range_test.go

@@ -0,0 +1,193 @@
+package main_test
+
+import (
+	"testing"
+
+	"github.com/matryer/is"
+)
+
+// func BenchmarkChan(b *testing.B) {
+// 	sum := 0
+
+// 	for n := range countChan(b.N) {
+// 		sum += n
+// 	}
+// 	b.StopTimer()
+// 	b.Log(sum)
+// }
+
+// func BenchmarkScan(b *testing.B) {
+// 	sum := 0
+// 	scan, value := countScan(b.N)
+// 	for scan() {
+// 		sum += value()
+// 	}
+// 	b.StopTimer()
+// 	b.Log(sum)
+// }
+
+// func BenchmarkRange(b *testing.B) {
+// 	sum := 0
+// 	for n := range countRF(b.N) {
+// 		sum += n
+// 	}
+// 	b.StopTimer()
+// 	b.Log(sum)
+// }
+
+// func TestRangeS(t *testing.T) {
+// 	for i := range Step(0, 10, 3) {
+// 		t.Log(i)
+// 	}
+
+// 	for i := range Step(10, 0, -3) {
+// 		t.Log(i)
+// 	}
+// }
+
+func TestSelect(t *testing.T) {
+	done1 := make(chan struct{})
+	done2 := make(chan struct{})
+
+	go func() {
+		close(done1)
+		close(done2)
+	}()
+
+	for i, ch := range []chan struct{}{done1, done2} {
+		<-ch
+		println("closed", i)
+	}
+}
+
+func TestGCD(t *testing.T) {
+	is := is.New(t)
+	is.Equal(gcdOfStrings("ABAB", "ABABAB"), "AB")
+	is.Equal(gcdOfStrings("ABAB", "ABABABAB"), "ABAB")
+	is.Equal(gcdOfStrings("ABC", "ABCABC"), "ABC")
+	is.Equal(gcdOfStrings("ABC", "ABCDEF"), "")
+	is.Equal(gcdOfStrings("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"), "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA")
+}
+func gcdOfStrings(str1 string, str2 string) string {
+	if len(str1) == 0 {
+		return ""
+	}
+	runes1 := []rune(str1)
+	runes2 := []rune(str2)
+
+	n := max(len(runes1), len(runes2))
+	m := min(len(runes1), len(runes2))
+
+	if len(runes2) == m {
+		runes1, runes2 = runes2, runes1
+	}
+
+	if isRepeating(runes1, runes2) {
+		return string(runes1)
+	}
+
+	for i := n; i > 0; i-- {
+		if runes1[i%len(runes1)] != runes2[i%len(runes2)] {
+			return ""
+		}
+		gcd := runes2[:i]
+		if isRepeating(gcd, runes1) && isRepeating(gcd, runes2) {
+			return string(gcd)
+		}
+	}
+
+	return ""
+}
+func isRepeating(str1, str2 []rune) bool {
+	if len(str1) > len(str2) {
+		return false
+	}
+	if len(str2)%len(str1) != 0 {
+		return false
+	}
+	for i := range str2 {
+		if str1[i%len(str1)] != str2[i] {
+			return false
+		}
+	}
+	return true
+}
+
+func canPlaceFlowers(flowerbed []int, n int) bool {
+	var c int
+
+	for i := 0; i < len(flowerbed); i++ {
+		if (i == 0 || flowerbed[i-1] == 0) &&
+			flowerbed[i] == 0 &&
+			(i == len(flowerbed)-1 || flowerbed[i+1] == 0) {
+			c++
+			flowerbed[i] = 1
+		}
+	}
+
+	return c >= n
+}
+
+func TestFlowers(t *testing.T) {
+	is := is.New(t)
+	is.Equal(canPlaceFlowers([]int{1, 0, 0, 0, 1}, 1), true)
+	is.Equal(canPlaceFlowers([]int{0, 0, 1, 0, 1}, 1), true)
+	is.Equal(canPlaceFlowers([]int{1, 0, 1, 0, 0}, 1), true)
+}
+
+func dailyTemperatures(temperatures []int) []int {
+	answers := make([]int, len(temperatures))
+	var stack  [][2]int
+	push := func(v int) {
+		if len(stack) == 0 {
+			stack = append(stack, [2]int{v, 1})
+			return
+		}
+		end := len(stack)-1
+		if v < stack[end][0]{
+			stack = append(stack, [2]int{v, 1})
+			return
+
+		}
+		if v == stack[end][0] {
+			stack[len(stack)-1][1]++
+			return
+		}
+
+		var vs = [2]int{v, 1}
+		// for ; end>0; end-- {	
+		// 	if stack[end][0]<vs[0] {
+		// 		vs[1]+=stack[end][1]
+		// 		continue
+		// 	}
+		// 	break
+		// }
+		stack = append(stack, vs)
+	}
+
+	for i := len(temperatures) - 2; i >= 0; i-- {
+		push(temperatures[i+1])
+		currentTemp := temperatures[i]
+		days := 1
+		end := len(stack)-1
+		for j := range stack {
+			nextTemp := stack[end-j]
+			if currentTemp < nextTemp[0] {
+				answers[i] = days
+				break
+			}
+			days+=nextTemp[1]
+		}
+	}
+
+	return answers
+}
+
+func TestTemps(t *testing.T) {
+	is := is.New(t)
+	is.Equal(dailyTemperatures(
+		[]int{73, 74, 75, 71, 69, 72, 76, 73}),
+		[]int{1, 1, 4, 2, 1, 1, 0, 0})
+	is.Equal(dailyTemperatures(
+		[]int{99,99,99,99,100}), []int{4,3,2,1,0})	
+}

ranger/rangefunc.go

@@ -0,0 +1,12 @@
+package main
+
+
+func countRF(n int) func(yield func(int) bool) {
+	return func(yield func(int) bool) {
+		for i := range n {
+			if !yield(i) {
+				return
+			}
+		}
+	}
+} 

search.go

@@ -1,7 +1,6 @@
 package aoc
 
 import (
-	"maps"
 	"math/bits"
 	"sort"
 )
@@ -323,105 +322,3 @@ func (h *fibHeap[T]) cascadingCut(y *fibTree[T]) {
 		h.cascadingCut(y.parent)
 	}
 }
-
-// FindPath uses the A* path finding algorithem.
-// g is the graph source that implements the pather interface.
-//
-//	C is an numeric type for calculating cost/potential
-//	N is the node values. is comparable for storing in visited table for pruning.
-//
-// start, end are nodes that dileniate the start and end of the search path.
-// The returned values are the calculated cost and the path taken from start to end.
-func FindPaths[C integer, N comparable](g pather[C, N], start, end N) ([]C, [][]N) {
-	var zero C
-	// closed := make(map[N]bool)
-
-	var potentialFn = func(N) C { var zero C; return zero }
-	if p, ok := g.(interface{ Potential(N) C }); ok {
-		potentialFn = p.Potential
-	}
-
-	type node struct {
-		cost      C
-		potential C
-		parent    *node
-		position  N
-		closed    map[N]bool
-	}
-
-	NewPath := func(n *node) []N {
-		var path []N
-		for n.parent != nil {
-			path = append(path, n.position)
-			n = n.parent
-		}
-		path = append(path, n.position)
-
-		Reverse(path)
-		return path
-	}
-
-	less := func(b, a *node) bool {
-		return b.cost+b.potential < a.cost+a.potential
-	}
-
-	pq := PriorityQueue(less)
-	pq.Insert(&node{position: start, closed: make(map[N]bool)})
-
-	defer func() {
-		Log("queue max depth = ", pq.maxDepth, "total enqueue = ", pq.totalEnqueue, "total dequeue = ", pq.totalDequeue)
-	}()
-
-	var seenFn = func(a N) N { return a }
-	if s, ok := g.(interface{ Seen(N) N }); ok {
-		seenFn = s.Seen
-	}
-
-	var targetFn = func(n N, c C) bool { return true }
-	if s, ok := g.(interface{ Target(N, C) bool }); ok {
-		targetFn = s.Target
-	}
-
-	var paths [][]N
-	var costs []C
-
-	for !pq.IsEmpty() {
-		current := pq.ExtractMin()
-		cost, potential, n := current.cost, current.potential, current.position
-
-		seen := seenFn(n)
-		if current.closed[seen] {
-			continue
-		}
-		current.closed[seen] = true
-
-		if cost > 0 && potential == zero && cost > Max(0, costs...) && targetFn(current.position, cost) {
-			paths = append([][]N(nil), NewPath(current))
-			costs = append([]C(nil), cost)
-			Log("new record = ", cost)
-			continue
-		}
-
-		for _, nb := range g.Neighbors(n) {
-			seen := seenFn(nb)
-			if current.closed[seen] {
-				continue
-			}
-
-			cost := g.Cost(n, nb) + current.cost
-			next := &node{
-				position:  nb,
-				parent:    current,
-				cost:      cost,
-				potential: potentialFn(nb),
-				closed:    maps.Clone(current.closed),
-			}
-			// check if path is in open list
-			if _, open := current.closed[seen]; !open {
-				next.closed[seen] = false // add to open list
-				pq.Insert(next)
-			}
-		}
-	}
-	return costs, paths
-}