2023 Days 4 and 6

2023/06/main.go

@@ -0,0 +1,53 @@
+
+package main
+
+import (
+	"os"
+	"strconv"
+)
+
+func main() {
+	if len(os.Args) < 3 {
+		println("usage: part1 <time> <distance>");
+		return;
+	}
+	time, err := strconv.Atoi(os.Args[1]);
+	if err != nil {
+		println("time must be a number!");
+	}
+	dist, err := strconv.Atoi(os.Args[2]);
+	if err != nil {
+		println("dist must be a number!");
+	}
+	
+	minimum := min(0, time, time, dist);
+
+	maximum := time - minimum - 1;
+
+	variety := maximum - minimum;
+
+	println(variety);
+
+}
+
+func min(start, end, time, dist int) int {
+
+	if end - start < 2 {
+		return start
+	}
+
+	guess := start + ((end-start) / 2);
+
+	res := calc(guess, time);
+
+	if res > dist {
+		return min(0, guess, time, dist);
+	}
+	return min(guess, end, time, dist);
+
+}
+
+func calc(pushtime, totaltime int) int {
+	return (totaltime*pushtime) - (pushtime*pushtime)
+}
+