From e28c733f758adc362095299a73b7f4dacd76be6e Mon Sep 17 00:00:00 2001
From: Steve2020 <841532108@qq.com>
Date: Wed, 25 May 2022 11:19:33 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=EF=BC=881207.=E7=8B=AC?=
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 =?UTF-8?q?=E6=95=B0.md=EF=BC=89=EF=BC=9A=E5=A2=9E=E5=8A=A0typescript?=
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---
 problems/1207.独一无二的出现次数.md | 34 ++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/problems/1207.独一无二的出现次数.md b/problems/1207.独一无二的出现次数.md
index ba92552a..fc51dfd4 100644
--- a/problems/1207.独一无二的出现次数.md
+++ b/problems/1207.独一无二的出现次数.md
@@ -150,5 +150,39 @@ var uniqueOccurrences = function(arr) {
 };
 ```
 
+TypeScript：
+
+> 借用数组：
+
+```typescript
+function uniqueOccurrences(arr: number[]): boolean {
+    const countArr: number[] = new Array(2001).fill(0);
+    for (let i = 0, length = arr.length; i < length; i++) {
+        countArr[arr[i] + 1000]++;
+    }
+    const flagArr: boolean[] = new Array(1001).fill(false);
+    for (let count of countArr) {
+        if (count === 0) continue;
+        if (flagArr[count] === true) return false;
+        flagArr[count] = true;
+    }
+    return true;
+};
+```
+
+> 借用map、set
+
+```typescript
+function uniqueOccurrences(arr: number[]): boolean {
+    const countMap: Map<number, number> = new Map();
+    arr.forEach(val => {
+        countMap.set(val, (countMap.get(val) || 0) + 1);
+    })
+    return countMap.size === new Set(countMap.values()).size;
+};
+```
+
+
+
 -----------------------
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