infix to prefix conversion using stack

3:51

5:04

3:07

2:52

4:36

6:28

42:16

2:06

10:36

5:42

7:08

4:30

3:03

44:00

3:27

22:58

22:53

3:54

2:22

5:32

9:46

11:37

16:04

12:11

8:30

10:33

4:41:21

3:45

9:54

2:42

7:16

5:26

2:52

3:51

2:16

کوتاه

7:22

کوتاه

5:50

8:01