Merge pull request #855 from vfonic/1584-Min-Cost-to-Connect-all-Points

Create 1584-Min-Cost-to-Connect-all-Points.rb

Author: Ahmad-A0

ruby/1584-Min-Cost-to-Connect-All-Points.rb

@@ -0,0 +1,33 @@
+# @param {Integer[][]} points
+# @return {Integer}
+def min_cost_connect_points(points)
+  manhattan = ->(x, y) { (x[0] - y[0]).abs + (x[1] - y[1]).abs }
+
+  to_visit = Set.new(points)
+
+  result = 0
+  bil = 1_000_000_000
+  cost_to = Hash.new { bil }
+
+  current_point = points[0]
+  to_visit.delete current_point
+
+  (points.size - 1).times do |_i|
+    min = bil
+    next_point = nil
+
+    to_visit.each do |point|
+      cost_to[point] = [cost_to[point], manhattan.call(current_point, point)].min
+      if min > cost_to[point]
+        min = cost_to[point]
+        next_point = point
+      end
+    end
+
+    current_point = next_point
+    result += min
+    to_visit.delete current_point
+  end
+
+  result
+end