From 4fac5c271d0188df6e9c4a9e24fc0e18d0756746 Mon Sep 17 00:00:00 2001
From: zhaocchen <zhaocchen@163.com>
Date: Wed, 2 Jun 2021 14:01:59 +0800
Subject: [PATCH] feat: add typescript solution to lc problem: No.0342.Power of
 Four

---
 solution/0300-0399/0342.Power of Four/README.md    | 8 ++++++++
 solution/0300-0399/0342.Power of Four/README_EN.md | 8 ++++++++
 solution/0300-0399/0342.Power of Four/Solution.ts  | 3 +++
 3 files changed, 19 insertions(+)
 create mode 100644 solution/0300-0399/0342.Power of Four/Solution.ts

diff --git a/solution/0300-0399/0342.Power of Four/README.md b/solution/0300-0399/0342.Power of Four/README.md
index 4b3b8ee4a3f21..f5bb72f3e7082 100644
--- a/solution/0300-0399/0342.Power of Four/README.md	
+++ b/solution/0300-0399/0342.Power of Four/README.md	
@@ -109,6 +109,14 @@ func isPowerOfFour(n int) bool {
 }
 ```
 
+### **TypeScript**
+
+```ts
+function isPowerOfFour(n: number): boolean {
+    return n > 0 && (n & (n - 1)) == 0 && (n & 0xaaaaaaaa) == 0;
+};
+```
+
 ### **...**
 
 ```
diff --git a/solution/0300-0399/0342.Power of Four/README_EN.md b/solution/0300-0399/0342.Power of Four/README_EN.md
index a567b1d4ca8a4..485bb19bbf4be 100644
--- a/solution/0300-0399/0342.Power of Four/README_EN.md	
+++ b/solution/0300-0399/0342.Power of Four/README_EN.md	
@@ -82,6 +82,14 @@ func isPowerOfFour(n int) bool {
 }
 ```
 
+### **TypeScript**
+
+```ts
+function isPowerOfFour(n: number): boolean {
+    return n > 0 && (n & (n - 1)) == 0 && (n & 0xaaaaaaaa) == 0;
+};
+```
+
 ### **...**
 
 ```
diff --git a/solution/0300-0399/0342.Power of Four/Solution.ts b/solution/0300-0399/0342.Power of Four/Solution.ts
new file mode 100644
index 0000000000000..29c761593bc65
--- /dev/null
+++ b/solution/0300-0399/0342.Power of Four/Solution.ts	
@@ -0,0 +1,3 @@
+function isPowerOfFour(n: number): boolean {
+    return n > 0 && (n & (n - 1)) == 0 && (n & 0xaaaaaaaa) == 0;
+};
\ No newline at end of file