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Preorder Traversal with a Stack
Push the root onto the stack.
While the stack is not empty
pop the stack and visit it
push its two children
14 84 13 53 06 99 72 43 33 64 97 51 25

14
Stack

14
43

84

16

13

53

99

33

72

97

64
Preorder Traversal with a Stack
Push the root onto the stack.
While the stack is not empty
pop the stack and visit it
push its two children
84
43

14 84 13 53 06 99 72 43 33 64 97 51 25

Stack

14
43

84

16

13

53

99

33

72

97

64
Preorder Traversal with a Stack
Push the root onto the stack.
While the stack is not empty
pop the stack and visit it
push its two children
13
16
43

14 84 13 53 06 99 72 43 33 64 97 51 25

Stack

14
43

84

16

13

53

99

33

72

97

64
Preorder Traversal with a Stack
Push the root onto the stack.
While the stack is not empty
pop the stack and visit it
push its two children
53
16
43

14 84 13 53 06 99 72 43 33 64 97 51 25

Stack

14
43

84

16

13

53

99

33

72

97

64
Preorder Traversal with a Stack
Push the root onto the stack.
While the stack is not empty
pop the stack and visit it
push its two children
16
43

14 84 13 53 06 99 72 43 33 64 97 51 25

Stack

14
43

84

16

13

53

99

33

72

97

64
Preorder Traversal with a Stack
Push the root onto the stack.
While the stack is not empty
pop the stack and visit it
push its two children
99
72
43

14 84 13 53 16 99 72 43 33 64 97 51 25

Stack

14
43

84

16
6

13

53

99

33

72

97

64
Preorder Traversal with a Stack
Push the root onto the stack.
While the stack is not empty
pop the stack and visit it
push its two children
72
43

14 84 13 53 16 99 72 43 33 64 97 51 25

Stack

14
43

84

16

13

53

99

33

72

97

64
Preorder Traversal with a Stack
Push the root onto the stack.
While the stack is not empty
pop the stack and visit it
push its two children
14 84 13 53 16 99 72 43 33 64 97 51 25

43
Stack

14
43

84

16

13

53

99

33

72

97

64
Preorder Traversal with a Stack
Push the root onto the stack.
While the stack is not empty
pop the stack and visit it
push its two children
33
97

14 84 13 53 16 99 72 43 33 64 97 51 25

Stack

14
43

84

16

13

53

99

33

72

97

64
Preorder Traversal with a Stack
Push the root onto the stack.
While the stack is not empty
pop the stack and visit it
push its two children
64
97

14 84 13 53 16 99 72 43 33 64 97 51 25

Stack

14
43

84

16

13

53

99

33

72

97

64
Preorder Traversal with a Stack
Push the root onto the stack.
While the stack is not empty
pop the stack and visit it
push its two children
14 84 13 53 16 99 72 43 33 64 97 51 25

97
Stack

14
43

84

16

13

53

99

33

72

97

64
Preorder Traversal with a Stack
Push the root onto the stack.
While the stack is not empty
pop the stack and visit it
push its two children
14 84 13 53 16 99 72 43 33 64 97 51 25
Stack

14
43

84

16

13

53

99

33

72

97

64
Preorder Traversal with a Stack
Push the root onto the stack.
While the stack is not empty
pop the stack and visit it
push its two children
14 84 13 53 16 99 72 43 33 64 97 51 25
Stack

14
43

84

16

13

53

99

33

72

97

64

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Demo preorder-stack

  • 1. Preorder Traversal with a Stack Push the root onto the stack. While the stack is not empty pop the stack and visit it push its two children 14 84 13 53 06 99 72 43 33 64 97 51 25 14 Stack 14 43 84 16 13 53 99 33 72 97 64
  • 2. Preorder Traversal with a Stack Push the root onto the stack. While the stack is not empty pop the stack and visit it push its two children 84 43 14 84 13 53 06 99 72 43 33 64 97 51 25 Stack 14 43 84 16 13 53 99 33 72 97 64
  • 3. Preorder Traversal with a Stack Push the root onto the stack. While the stack is not empty pop the stack and visit it push its two children 13 16 43 14 84 13 53 06 99 72 43 33 64 97 51 25 Stack 14 43 84 16 13 53 99 33 72 97 64
  • 4. Preorder Traversal with a Stack Push the root onto the stack. While the stack is not empty pop the stack and visit it push its two children 53 16 43 14 84 13 53 06 99 72 43 33 64 97 51 25 Stack 14 43 84 16 13 53 99 33 72 97 64
  • 5. Preorder Traversal with a Stack Push the root onto the stack. While the stack is not empty pop the stack and visit it push its two children 16 43 14 84 13 53 06 99 72 43 33 64 97 51 25 Stack 14 43 84 16 13 53 99 33 72 97 64
  • 6. Preorder Traversal with a Stack Push the root onto the stack. While the stack is not empty pop the stack and visit it push its two children 99 72 43 14 84 13 53 16 99 72 43 33 64 97 51 25 Stack 14 43 84 16 6 13 53 99 33 72 97 64
  • 7. Preorder Traversal with a Stack Push the root onto the stack. While the stack is not empty pop the stack and visit it push its two children 72 43 14 84 13 53 16 99 72 43 33 64 97 51 25 Stack 14 43 84 16 13 53 99 33 72 97 64
  • 8. Preorder Traversal with a Stack Push the root onto the stack. While the stack is not empty pop the stack and visit it push its two children 14 84 13 53 16 99 72 43 33 64 97 51 25 43 Stack 14 43 84 16 13 53 99 33 72 97 64
  • 9. Preorder Traversal with a Stack Push the root onto the stack. While the stack is not empty pop the stack and visit it push its two children 33 97 14 84 13 53 16 99 72 43 33 64 97 51 25 Stack 14 43 84 16 13 53 99 33 72 97 64
  • 10. Preorder Traversal with a Stack Push the root onto the stack. While the stack is not empty pop the stack and visit it push its two children 64 97 14 84 13 53 16 99 72 43 33 64 97 51 25 Stack 14 43 84 16 13 53 99 33 72 97 64
  • 11. Preorder Traversal with a Stack Push the root onto the stack. While the stack is not empty pop the stack and visit it push its two children 14 84 13 53 16 99 72 43 33 64 97 51 25 97 Stack 14 43 84 16 13 53 99 33 72 97 64
  • 12. Preorder Traversal with a Stack Push the root onto the stack. While the stack is not empty pop the stack and visit it push its two children 14 84 13 53 16 99 72 43 33 64 97 51 25 Stack 14 43 84 16 13 53 99 33 72 97 64
  • 13. Preorder Traversal with a Stack Push the root onto the stack. While the stack is not empty pop the stack and visit it push its two children 14 84 13 53 16 99 72 43 33 64 97 51 25 Stack 14 43 84 16 13 53 99 33 72 97 64