Add frog jump (Go/Java)

Go/jobspls/algorithms/frog_jump.go

@@ -0,0 +1,18 @@
+package main
+
+import (
+	"fmt"
+	"math"
+)
+
+// How many jumps does it take to reach dest by dist?
+func FrogJump(start, dest, dist uint) (uint, error) {
+	if start > dest {
+		return 0, fmt.Errorf("start > dest")
+	}
+
+	diff := dest - start
+	jumps := uint(diff/dist) + uint(math.Min(1.0, float64(diff%dist)))
+
+	return jumps, nil
+}

Java/jobspls/algorithms/FrogJump.java

@@ -0,0 +1,22 @@
+package jobspls.algorithms;
+
+import java.lang.Math;
+import java.util.OptionalInt;
+
+public class FrogJump {
+    public static OptionalInt frog_jump(int start, int dest, int dist) {
+        if (
+            start > dest ||
+            start < 0 ||
+            dest < 0 ||
+            dist <= 0
+        ) {
+            return OptionalInt.empty();
+        }
+
+        var diff = dest - start;
+        var jumps = (int)(diff/dist) + (int)(Math.min(1.0, diff%dist));
+
+        return OptionalInt.of(jumps);
+    }
+}