asmhatre/java-interview-lab
1
0
Fork 0
Code Activity

New posts

Browse Source
This commit is contained in:
asmhatre
2026-11-06 21:43:33 +05:30
parent 8d8d7956ba
commit 4a9021d936
34 changed files with 1778 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
binary-tree-traversals/output/05-postorder-one-stack-steps.txt
+26
View File
@@ -0,0 +1,26 @@
Iterative postorder with one stack, step by step
================================================
step | action | stack (bottom..top) | output so far
1 | push 1 | [1] | []
2 | push 2 | [1 2] | []
3 | push 4 | [1 2 4] | []
4 | pop 4, visit | [1 2] | [4]
5 | peek 2: right child 5 not done, go right | [1 2] | [4]
6 | push 5 | [1 2 5] | [4]
7 | push 7 | [1 2 5 7] | [4]
8 | pop 7, visit | [1 2 5] | [4 7]
9 | pop 5, visit | [1 2] | [4 7 5]
10 | pop 2, visit | [1] | [4 7 5 2]
11 | peek 1: right child 3 not done, go right | [1] | [4 7 5 2]
12 | push 3 | [1 3] | [4 7 5 2]
13 | peek 3: right child 6 not done, go right | [1 3] | [4 7 5 2]
14 | push 6 | [1 3 6] | [4 7 5 2]
15 | push 8 | [1 3 6 8] | [4 7 5 2]
16 | pop 8, visit | [1 3 6] | [4 7 5 2 8]
17 | peek 6: right child 9 not done, go right | [1 3 6] | [4 7 5 2 8]
18 | push 9 | [1 3 6 9] | [4 7 5 2 8]
19 | pop 9, visit | [1 3 6] | [4 7 5 2 8 9]
20 | pop 6, visit | [1 3] | [4 7 5 2 8 9 6]
21 | pop 3, visit | [1] | [4 7 5 2 8 9 6 3]
22 | pop 1, visit | [] | [4 7 5 2 8 9 6 3 1]