From 3933b49cb36eaacb1fca0d40861386722b32347e Mon Sep 17 00:00:00 2001
From: han <niuli1991@gmail.com>
Date: Wed, 26 Jul 2023 17:21:15 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A01002.=E6=9F=A5=E6=89=BE?=
 =?UTF-8?q?=E5=B8=B8=E7=94=A8=E5=AD=97=E7=AC=A6=20Ruby=E5=AE=9E=E7=8E=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 problems/1002.查找常用字符.md | 48 +++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/problems/1002.查找常用字符.md b/problems/1002.查找常用字符.md
index a53148b3..81b07b39 100644
--- a/problems/1002.查找常用字符.md
+++ b/problems/1002.查找常用字符.md
@@ -518,6 +518,54 @@ impl Solution {
 }
 ```
 
+Ruby:
+```ruby
+def common_chars(words)
+  result = []
+  #统计所有字符串里字符出现的最小频率
+  hash = {}
+  #初始化标识
+  is_first = true
+
+  words.each do |word|
+    #记录共同字符
+    chars = []
+    word.split('').each do |chr|
+      #第一个字符串初始化
+      if is_first
+        chars << chr
+      else
+        #字母之前出现过的最小次数
+        if hash[chr] != nil && hash[chr] > 0
+          hash[chr] -= 1
+          chars << chr
+        end
+      end
+    end
+
+    is_first = false
+    #清除hash，更新字符最小频率
+    hash.clear
+    chars.each do |chr|
+      if hash[chr] != nil
+        hash[chr] += 1
+      else
+        hash[chr] = 1
+      end
+    end
+  end
+
+  #字符最小频率hash转换为字符数组
+  hash.keys.each do |key|
+    for i in 0..hash[key] - 1
+      result << key
+    end
+  end
+
+  return result
+end
+```
+
 <p align="center">
 <a href="https://programmercarl.com/other/kstar.html" target="_blank">
   <img src="../pics/网站星球宣传海报.jpg" width="1000"/>