translation: Add Python and Java code for EN version (#1345)

* Add the intial translation of code of all the languages

* test

* revert

* Remove

* Add Python and Java code for EN version

en/codes/java/chapter_searching/hashing_search.java

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+/**
+ * File: hashing_search.java
+ * Created Time: 2022-11-25
+ * Author: krahets (krahets@163.com)
+ */
+
+package chapter_searching;
+
+import utils.*;
+import java.util.*;
+
+public class hashing_search {
+    /* Hash search (array) */
+    static int hashingSearchArray(Map<Integer, Integer> map, int target) {
+        // Hash table's key: target element, value: index
+        // If the hash table does not contain this key, return -1
+        return map.getOrDefault(target, -1);
+    }
+
+    /* Hash search (linked list) */
+    static ListNode hashingSearchLinkedList(Map<Integer, ListNode> map, int target) {
+        // Hash table key: target node value, value: node object
+        // If the key is not in the hash table, return null
+        return map.getOrDefault(target, null);
+    }
+
+    public static void main(String[] args) {
+        int target = 3;
+
+        /* Hash search (array) */
+        int[] nums = { 1, 5, 3, 2, 4, 7, 5, 9, 10, 8 };
+        // Initialize hash table
+        Map<Integer, Integer> map = new HashMap<>();
+        for (int i = 0; i < nums.length; i++) {
+            map.put(nums[i], i); // key: element, value: index
+        }
+        int index = hashingSearchArray(map, target);
+        System.out.println("The index of target element 3 is " + index);
+
+        /* Hash search (linked list) */
+        ListNode head = ListNode.arrToLinkedList(nums);
+        // Initialize hash table
+        Map<Integer, ListNode> map1 = new HashMap<>();
+        while (head != null) {
+            map1.put(head.val, head); // key: node value, value: node
+            head = head.next;
+        }
+        ListNode node = hashingSearchLinkedList(map1, target);
+        System.out.println("The corresponding node object for target node value 3 is " + node);
+    }
+}