From 4dbb50f05ddbcc96566e5e24cd1c28aef8b91fd6 Mon Sep 17 00:00:00 2001
From: ductnn <trannhuduc531998@gmail.com>
Date: Sun, 10 Dec 2023 18:29:07 +0700
Subject: [PATCH] add sol

---
 .../uniqueNumberOfOccurrences.go              | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 leetcode/leetcode75/1207.UniqueNumberOfOccurrences/uniqueNumberOfOccurrences.go

diff --git a/leetcode/leetcode75/1207.UniqueNumberOfOccurrences/uniqueNumberOfOccurrences.go b/leetcode/leetcode75/1207.UniqueNumberOfOccurrences/uniqueNumberOfOccurrences.go
new file mode 100644
index 0000000..c7fb294
--- /dev/null
+++ 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))
+}