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_computational_complexity/iteration.py

@@ -0,0 +1,65 @@
+"""
+File: iteration.py
+Created Time: 2023-08-24
+Author: krahets (krahets@163.com)
+"""
+
+
+def for_loop(n: int) -> int:
+    """for loop"""
+    res = 0
+    # Loop sum 1, 2, ..., n-1, n
+    for i in range(1, n + 1):
+        res += i
+    return res
+
+
+def while_loop(n: int) -> int:
+    """while loop"""
+    res = 0
+    i = 1  # Initialize condition variable
+    # Loop sum 1, 2, ..., n-1, n
+    while i <= n:
+        res += i
+        i += 1  # Update condition variable
+    return res
+
+
+def while_loop_ii(n: int) -> int:
+    """while loop (two updates)"""
+    res = 0
+    i = 1  # Initialize condition variable
+    # Loop sum 1, 4, 10, ...
+    while i <= n:
+        res += i
+        # Update condition variable
+        i += 1
+        i *= 2
+    return res
+
+
+def nested_for_loop(n: int) -> str:
+    """Double for loop"""
+    res = ""
+    # Loop i = 1, 2, ..., n-1, n
+    for i in range(1, n + 1):
+        # Loop j = 1, 2, ..., n-1, n
+        for j in range(1, n + 1):
+            res += f"({i}, {j}), "
+    return res
+
+
+"""Driver Code"""
+if __name__ == "__main__":
+    n = 5
+    res = for_loop(n)
+    print(f"\nfor loop sum result res = {res}")
+
+    res = while_loop(n)
+    print(f"\nwhile loop sum result res = {res}")
+
+    res = while_loop_ii(n)
+    print(f"\nwhile loop (two updates) sum result res = {res}")
+
+    res = nested_for_loop(n)
+    print(f"\nDouble for loop traversal result {res}")