go: add «735. Asteroid Collision»

Signed-off-by: Matej Focko <me@mfocko.xyz>

go/asteroid-collision.go

@@ -0,0 +1,33 @@
+package main
+
+import as "github.com/emirpasic/gods/v2/stacks/arraystack"
+
+func asteroidCollision(asteroids []int) []int {
+	st := as.New[int]()
+
+	for _, asteroid := range asteroids {
+		alive := true
+
+		for top, ok := st.Peek(); ok && asteroid < 0 && top > 0; top, ok = st.Peek() {
+			if top < -asteroid {
+				st.Pop()
+				continue
+			} else if top == -asteroid {
+				st.Pop()
+			}
+
+			alive = false
+			break
+		}
+
+		if alive {
+			st.Push(asteroid)
+		}
+	}
+
+	result := make([]int, st.Size())
+	for i := st.Size() - 1; i >= 0; i-- {
+		result[i], _ = st.Pop()
+	}
+	return result
+}