From d145d689c20b22fc560d7d9384b1b813d04e589b Mon Sep 17 00:00:00 2001
From: Omooo <869759698@qq.com>
Date: Fri, 12 Jun 2020 09:02:37 +0800
Subject: [PATCH] =?UTF-8?q?Update=20=E6=95=B0=E7=BB=84=E7=9B=B8=E5=85=B3.m?=
 =?UTF-8?q?d?=
MIME-Version: 1.0
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---
 blogs/Algorithm/剑指 Offer/数组相关.md | 52 ++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/blogs/Algorithm/剑指 Offer/数组相关.md b/blogs/Algorithm/剑指 Offer/数组相关.md
index b787648..431f506 100644
--- a/blogs/Algorithm/剑指 Offer/数组相关.md	
+++ b/blogs/Algorithm/剑指 Offer/数组相关.md	
@@ -159,3 +159,55 @@ class Solution {
 }
 ```
 
+[45. 把数组排成最小的数](https://leetcode-cn.com/problems/ba-shu-zu-pai-cheng-zui-xiao-de-shu-lcof/)
+
+```java
+class Solution {
+    public String minNumber(int[] nums) {
+        String[] strings = getStringArray(nums);
+        Arrays.sort(strings, new Cop());
+
+        StringBuilder result = new StringBuilder();
+        for (String s : strings) {
+            result.append(s);
+        }
+        return result.toString();
+    }
+
+    private String[] getStringArray(int[] nums) {
+        String[] strings = new String[nums.length];
+        for (int i = 0; i < nums.length; i++) {
+            strings[i] = String.valueOf(nums[i]);
+        }
+        return strings;
+    }
+
+    class Cop implements Comparator<String> {
+        @Override
+        public int compare(String o1, String o2) {
+            String s1 = o1 + o2;
+            String s2 = o2 + o1;
+            return s1.compareTo(s2);
+        }
+    }
+}
+```
+
+```java
+class Solution {
+    public String minNumber(int[] nums) {
+        String[] strings = new String[nums.length];
+        for (int i = 0; i < nums.length; i++) {
+            strings[i] = String.valueOf(nums[i]);
+        }
+        Arrays.sort(strings, (o1, o2) -> (o1 + o2).compareTo(o2 + o1));
+
+        StringBuilder result = new StringBuilder();
+        for (String s : strings) {
+            result.append(s);
+        }
+        return result.toString();
+    }
+}
+```
+