feat: add solutions to leetcode problem: No.0657

Author: yanglbme

solution/0600-0699/0657.Robot Return to Origin/README.md

@@ -36,15 +36,39 @@
 <!-- 这里可写当前语言的特殊实现逻辑 -->
 
 ```python
-
+class Solution:
+    def judgeCircle(self, moves: str) -> bool:
+        x = y = 0
+        for c in moves:
+            if c == 'R':
+                x += 1
+            elif c == 'L':
+                x -= 1
+            elif c == 'U':
+                y += 1
+            elif c == 'D':
+                y -= 1
+        return x == 0 and y == 0
 ```
 
 ### **Java**
 
 <!-- 这里可写当前语言的特殊实现逻辑 -->
 
 ```java
-
+class Solution {
+    public boolean judgeCircle(String moves) {
+        int x = 0, y = 0;
+        for (int i = 0; i < moves.length(); ++i) {
+            char c = moves.charAt(i);
+            if (c == 'R') ++x;
+            else if (c == 'L') --x;
+            else if (c == 'U') ++y;
+            else if (c == 'D') --y;
+        }
+        return x == 0 && y == 0;
+    }
+}
 ```
 
 ### **...**

solution/0600-0699/0657.Robot Return to Origin/README_EN.md

@@ -43,13 +43,37 @@
 ### **Python3**
 
 ```python
-
+class Solution:
+    def judgeCircle(self, moves: str) -> bool:
+        x = y = 0
+        for c in moves:
+            if c == 'R':
+                x += 1
+            elif c == 'L':
+                x -= 1
+            elif c == 'U':
+                y += 1
+            elif c == 'D':
+                y -= 1
+        return x == 0 and y == 0
 ```
 
 ### **Java**
 
 ```java
-
+class Solution {
+    public boolean judgeCircle(String moves) {
+        int x = 0, y = 0;
+        for (int i = 0; i < moves.length(); ++i) {
+            char c = moves.charAt(i);
+            if (c == 'R') ++x;
+            else if (c == 'L') --x;
+            else if (c == 'U') ++y;
+            else if (c == 'D') --y;
+        }
+        return x == 0 && y == 0;
+    }
+}
 ```
 
 ### **...**

solution/0600-0699/0657.Robot Return to Origin/Solution.java

@@ -0,0 +1,13 @@
+class Solution {
+    public boolean judgeCircle(String moves) {
+        int x = 0, y = 0;
+        for (int i = 0; i < moves.length(); ++i) {
+            char c = moves.charAt(i);
+            if (c == 'R') ++x;
+            else if (c == 'L') --x;
+            else if (c == 'U') ++y;
+            else if (c == 'D') --y;
+        }
+        return x == 0 && y == 0;
+    }
+}

solution/0600-0699/0657.Robot Return to Origin/Solution.py

@@ -1,20 +1,13 @@
 class Solution:
-    def judgeCircle(self, moves):
-        """
-        :type moves: str
-        :rtype: bool
-        """
-        
-        x = 0
-        y = 0
-        for each in moves:
-            if( each == 'U' ):
-                y += 1
-            elif( each == 'D' ):
-                y -= 1
-            elif( each == 'R' ):
+    def judgeCircle(self, moves: str) -> bool:
+        x = y = 0
+        for c in moves:
+            if c == 'R':
                 x += 1
-            elif( each == 'L' ):
+            elif c == 'L':
                 x -= 1
-        
-        return x == y == 0
+            elif c == 'U':
+                y += 1
+            elif c == 'D':
+                y -= 1
+        return x == 0 and y == 0