add sol

ductnn · Dec 10, 2023 · 4dbb50f · 4dbb50f
1 parent 41074e4
commit 4dbb50f
Showing 1 changed file with 25 additions and 0 deletions.
diff --git a/leetcode/leetcode75/1207.UniqueNumberOfOccurrences/uniqueNumberOfOccurrences.go b/leetcode/leetcode75/1207.UniqueNumberOfOccurrences/uniqueNumberOfOccurrences.go
@@ -0,0 +1,25 @@
+package main
+
+import (
+	"fmt"
+)
+
+func uniqueOccurrences(arr []int) bool {
+	cnt := map[int]int{}
+	for _, x := range arr {
+		cnt[x]++
+	}
+	vis := map[int]bool{}
+	for _, v := range cnt {
+		if vis[v] {
+			return false
+		}
+		vis[v] = true
+	}
+	return true
+}
+
+func main() {
+	arr := []int{1, 2, 2, 1, 1, 3}
+	fmt.Println(uniqueOccurrences(arr))
+}