2021 Day 17 Complete

helpers/helpers.go

@@ -108,6 +108,16 @@ func OptArgNumber(i int, def string) string {
 	return def
 }
 
+// StdinToString reads from stdin and returns a string
+func StdinToString() string {
+	var input string
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		input += scanner.Text()
+	}
+	return input
+}
+
 // StdinToIntSlice reads from stdin and returns it as an int slice
 func StdinToIntSlice() []int {
 	var ret []int
@@ -148,16 +158,6 @@ func Itoa(i int) string {
 	return strconv.Itoa(i)
 }
 
-// StdinToString reads from stdin and returns a string
-func StdinToString() string {
-	var input string
-	scanner := bufio.NewScanner(os.Stdin)
-	for scanner.Scan() {
-		input += scanner.Text()
-	}
-	return input
-}
-
 // FileToStringSlice takes a file and returns it as a slice of strings
 func FileToStringSlice(fn string) []string {
 	return strings.Split(string(FileToBytes(fn)), "\n")
@@ -358,16 +358,37 @@ func IsPrime(value int) bool {
 	return value > 1
 }
 
-func Min(v1, v2 int) int {
+func Min(v1, v2 int, vrest ...int) int {
+	min := v2
 	if v1 < v2 {
-		return v1
+		min = v1
 	}
-	return v2
+	for i := range vrest {
+		if vrest[i] < min {
+			min = vrest[i]
+		}
+	}
+	return min
 }
 
-func Max(v1, v2 int) int {
+func Max(v1, v2 int, vrest ...int) int {
+	max := v2
 	if v1 > v2 {
-		return v1
+		max = v1
 	}
-	return v2
+	for i := range vrest {
+		if vrest[i] > max {
+			max = vrest[i]
+		}
+	}
+	return max
+}
+
+// Sum adds up all of the numbers from l to h
+func Sum(l, h int) int {
+	var ret int
+	for i := Min(l, h); i <= Max(l, h); i++ {
+		ret = ret + i
+	}
+	return ret
 }