go: add «2593. Find Score of an Array After Marking All Elements»

URL:	https://leetcode.com/problems/find-score-of-an-array-after-marking-all-elements/
Signed-off-by: Matej Focko <me@mfocko.xyz>

go/find-score-of-an-array-after-marking-all-elements.go

@@ -0,0 +1,39 @@
+package main
+
+import (
+	"cmp"
+
+	pq "github.com/emirpasic/gods/v2/queues/priorityqueue"
+)
+
+type Candidate struct {
+	value int
+	index int
+}
+
+func smallestFirst(l, r Candidate) int {
+	return cmp.Or(cmp.Compare(l.value, r.value), cmp.Compare(l.index, r.index))
+}
+
+func findScore(nums []int) int64 {
+	candidates := pq.NewWith(smallestFirst)
+	for i, num := range nums {
+		candidates.Enqueue(Candidate{value: num, index: i})
+	}
+
+	score, marked := int64(0), make([]bool, len(nums))
+	for nextCandidate, ok := candidates.Dequeue(); ok; nextCandidate, ok = candidates.Dequeue() {
+		if marked[nextCandidate.index] {
+			continue
+		}
+
+		score += int64(nextCandidate.value)
+		for _, index := range []int{nextCandidate.index - 1, nextCandidate.index, nextCandidate.index + 1} {
+			if index >= 0 && index < len(marked) {
+				marked[index] = true
+			}
+		}
+	}
+
+	return score
+}