Combine AoC Repos

2016-12-16 16:21:15 -06:00
parent 5977b28d73
commit 105dbd1ff7
151 changed files with 9081 additions and 1 deletions
--- a/2015/day17/main.go
+++ b/2015/day17/main.go
@@ -0,0 +1,151 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+)
+
+type container struct {
+	value int
+	name  string
+}
+
+func main() {
+	if len(os.Args) < 2 {
+		fmt.Println("Usage: day17 <liters>")
+		os.Exit(1)
+	}
+	total := mustAtoi(os.Args[1])
+
+	var input []string
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		input = append(input, scanner.Text())
+	}
+
+	var containers []container
+	for i := range input {
+		val := mustAtoi(input[i])
+		// Generate a name for this container
+		var u int
+		for j := range containers {
+			if containers[j].value == val {
+				u++
+			}
+		}
+		n := strconv.Itoa(val) + "-" + strconv.Itoa(u)
+		containers = append(containers, container{value: val, name: n})
+	}
+	fmt.Println("All Containers: ")
+	fmt.Println(containers)
+	fmt.Println()
+
+	fmt.Println("Finding Combinations...")
+	res := findCombis(total, containers)
+	var final [][]container
+	fmt.Println()
+	fmt.Println("Sorting Results...")
+	for i := 0; i < len(res); i++ {
+		tst := sortContainers(res[i])
+		var dup bool
+		for j := 0; j < len(final); j++ {
+			if isEqual(tst, final[j]) {
+				dup = true
+			}
+		}
+		if !dup {
+			final = append(final, tst)
+		}
+	}
+	minNum := len(final[0])
+	var minConfig [][]container
+	for i := 0; i < len(final); i++ {
+		if len(final[i]) < minNum {
+			minNum = len(final[i])
+		}
+	}
+	for i := 0; i < len(final); i++ {
+		if len(final[i]) == minNum {
+			minConfig = append(minConfig, final[i])
+		}
+	}
+
+	fmt.Print("Total Combinations: ")
+	fmt.Println(strconv.Itoa(len(final)))
+
+	fmt.Println("Minimum Containers: " + strconv.Itoa(minNum))
+	fmt.Println("Num Configurations: " + strconv.Itoa(len(minConfig)))
+}
+
+func findCombis(total int, containers []container) [][]container {
+	var ret [][]container
+
+	for i := range containers {
+		if total == containers[i].value {
+			fmt.Print("O")
+			ret = append(ret, []container{containers[i]})
+		}
+		if containers[i].value < total {
+			fmt.Print(".")
+			bld := []container{containers[i]}
+
+			var pass []container
+			for j := range containers {
+				if i != j {
+					pass = append(pass, containers[j])
+				}
+			}
+
+			tmp := findCombis((total - containers[i].value), pass)
+
+			for idx := 0; idx < len(tmp); idx++ {
+				tmp[idx] = append(bld, tmp[idx]...)
+			}
+			ret = append(ret, tmp...)
+		}
+	}
+	return ret
+}
+
+func sortContainers(c []container) []container {
+	n := len(c)
+	swapped := true
+	for swapped {
+		swapped = false
+		for i := 1; i <= n-1; i++ {
+			if strings.Compare(c[i-1].name, c[i].name) > 0 {
+				tmp := c[i-1]
+				c[i-1] = c[i]
+				c[i] = tmp
+				swapped = true
+			}
+		}
+		n = n - 1
+	}
+	return c
+}
+
+func isEqual(a, b []container) bool {
+	if len(a) != len(b) {
+		return false
+	}
+	for i := 0; i < len(a); i++ {
+		if a[i].name != b[i].name {
+			return false
+		}
+	}
+	return true
+}
+
+func mustAtoi(s string) int {
+	var i int
+	var err error
+	if i, err = strconv.Atoi(s); err != nil {
+		fmt.Println("Tried to atoi " + s)
+		os.Exit(1)
+	}
+	return i
+}