feat: update leetcode solutions: No.0179. Largest Number

Author: yanglbme

solution/0100-0199/0179.Largest Number/README.md

@@ -23,22 +23,44 @@
 
 <!-- 这里可写通用的实现逻辑 -->
 
+先转成字符串列表，再对字符串列表进行字典序降序排列。最后将列表所有字符串拼接即可。
+
 <!-- tabs:start -->
 
 ### **Python3**
 
 <!-- 这里可写当前语言的特殊实现逻辑 -->
 
 ```python
+from functools import cmp_to_key
 
+class Solution:
+    def largestNumber(self, nums: List[int]) -> str:
+        num_list = list(map(str, nums))
+        num_list.sort(key=cmp_to_key(lambda x, y: int(y + x) - int(x + y)))
+        return '0' if num_list[0] == '0' else ''.join(num_list)
 ```
 
 ### **Java**
 
 <!-- 这里可写当前语言的特殊实现逻辑 -->
 
 ```java
-
+class Solution {
+    public String largestNumber(int[] nums) {
+        List<String> numList = new ArrayList<>();
+        for (int num : nums) {
+            numList.add(String.valueOf(num));
+        }
+        numList.sort((a, b) -> (b + a).compareTo(a + b));
+        if ("0".equals(numList.get(0))) return "0";
+        StringBuilder sb = new StringBuilder();
+        for (String s : numList) {
+            sb.append(s);
+        }
+        return sb.toString();
+    }
+}
 ```
 
 ### **...**

solution/0100-0199/0179.Largest Number/README_EN.md

@@ -33,13 +33,33 @@
 ### **Python3**
 
 ```python
+from functools import cmp_to_key
 
+class Solution:
+    def largestNumber(self, nums: List[int]) -> str:
+        num_list = list(map(str, nums))
+        num_list.sort(key=cmp_to_key(lambda x, y: int(y + x) - int(x + y)))
+        return '0' if num_list[0] == '0' else ''.join(num_list)
 ```
 
 ### **Java**
 
 ```java
-
+class Solution {
+    public String largestNumber(int[] nums) {
+        List<String> numList = new ArrayList<>();
+        for (int num : nums) {
+            numList.add(String.valueOf(num));
+        }
+        numList.sort((a, b) -> (b + a).compareTo(a + b));
+        if ("0".equals(numList.get(0))) return "0";
+        StringBuilder sb = new StringBuilder();
+        for (String s : numList) {
+            sb.append(s);
+        }
+        return sb.toString();
+    }
+}
 ```
 
 ### **...**

solution/0100-0199/0179.Largest Number/Solution.java

@@ -1,23 +1,15 @@
-public class Solution {
+class Solution {
     public String largestNumber(int[] nums) {
-
-		String[] strs = new String[nums.length];
-
-		for (int i = 0; i < strs.length; i++) {
-			strs[i] = nums[i] + "";
-		}
-
-		Arrays.sort(strs, new Comparator<String>() {
-
-			public int compare(String x, String y) {
-				return (y + x).compareTo(x + y);
-			}
-		});
-
-		if ("0".equals(strs[0])) {
-			return "0";
-		}
-
-		return String.join("", strs);
-	}
+        List<String> numList = new ArrayList<>();
+        for (int num : nums) {
+            numList.add(String.valueOf(num));
+        }
+        numList.sort((a, b) -> (b + a).compareTo(a + b));
+        if ("0".equals(numList.get(0))) return "0";
+        StringBuilder sb = new StringBuilder();
+        for (String s : numList) {
+            sb.append(s);
+        }
+        return sb.toString();
+    }
 }

solution/0100-0199/0179.Largest Number/Solution.py

@@ -0,0 +1,7 @@
+from functools import cmp_to_key
+
+class Solution:
+    def largestNumber(self, nums: List[int]) -> str:
+        num_list = list(map(str, nums))
+        num_list.sort(key=cmp_to_key(lambda x, y: int(y + x) - int(x + y)))
+        return '0' if num_list[0] == '0' else ''.join(num_list)