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/python/chapter_searching/linear_search.py

@@ -0,0 +1,45 @@
+"""
+File: linear_search.py
+Created Time: 2022-11-26
+Author: timi (xisunyy@163.com)
+"""
+
+import sys
+from pathlib import Path
+
+sys.path.append(str(Path(__file__).parent.parent))
+from modules import ListNode, list_to_linked_list
+
+
+def linear_search_array(nums: list[int], target: int) -> int:
+    """Linear search (array)"""
+    # Traverse array
+    for i in range(len(nums)):
+        if nums[i] == target:  # Found the target element, thus return its index
+            return i
+    return -1  # Did not find the target element, thus return -1
+
+
+def linear_search_linkedlist(head: ListNode, target: int) -> ListNode | None:
+    """Linear search (linked list)"""
+    # Traverse the list
+    while head:
+        if head.val == target:  # Found the target node, return it
+            return head
+        head = head.next
+    return None  # Did not find the target node, thus return None
+
+
+"""Driver Code"""
+if __name__ == "__main__":
+    target = 3
+
+    # Perform linear search in array
+    nums = [1, 5, 3, 2, 4, 7, 5, 9, 10, 8]
+    index: int = linear_search_array(nums, target)
+    print("Index of target element 3 =", index)
+
+    # Perform linear search in linked list
+    head: ListNode = list_to_linked_list(nums)
+    node: ListNode | None = linear_search_linkedlist(head, target)
+    print("Target node value 3's corresponding node object is", node)