!changed mathutil package to mathy, removed int/string casting from mathy

mathy/distances.go

@@ -0,0 +1,25 @@
+package mathy
+
+import (
+	"math"
+)
+
+func PythagoreanDistance(x1, y1, x2, y2 int) float64 {
+	xDiff := float64(x1 - x2)
+	yDiff := float64(y1 - y2)
+
+	sumOfSquares := math.Pow(xDiff, 2) + math.Pow(yDiff, 2)
+	return math.Sqrt(sumOfSquares)
+}
+
+func ManhattanDistance(x1, y1, x2, y2 int) int {
+	xDiff := x1 - x2
+	yDiff := y1 - y2
+	if xDiff < 0 {
+		xDiff *= -1
+	}
+	if yDiff < 0 {
+		yDiff *= -1
+	}
+	return xDiff + yDiff
+}