From 19a6a4e369277cd192f6b149b008ce2d0cba23a4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lane=20Zhang=20=28=E5=BC=A0=E5=81=A5=29?=
 <zhangjian@yunqisd.com>
Date: Mon, 14 Oct 2024 10:00:24 +0800
Subject: [PATCH] =?UTF-8?q?Update=200202.=E5=BF=AB=E4=B9=90=E6=95=B0.md=20?=
 =?UTF-8?q?=E5=A2=9E=E5=8A=A0=20Ruby=20=E7=89=88=E6=9C=AC=E5=AE=9E?=
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---
 problems/0202.快乐数.md | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/problems/0202.快乐数.md b/problems/0202.快乐数.md
index 409a7471..39cb39fa 100644
--- a/problems/0202.快乐数.md
+++ b/problems/0202.快乐数.md
@@ -534,6 +534,30 @@ public class Solution {
 }
 ```
 
+### Ruby：
+
+```ruby
+# @param {Integer} n
+# @return {Boolean}
+def is_happy(n)
+    @occurred_nums = Set.new
+
+    while true
+        n = next_value(n)
+
+        return true if n == 1
+
+        return false if @occurred_nums.include?(n)
+            
+        @occurred_nums << n
+    end
+end
+
+def next_value(n)
+    n.to_s.chars.sum { |char| char.to_i ** 2 }
+end
+```
+
 <p align="center">
 <a href="https://programmercarl.com/other/kstar.html" target="_blank">
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