DSA · Theory

Left View Of a Tree

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Theory

749/810

Left View Of a Tree

Don’t start Left View Of a Tree with jargon. Start with folder on disk. That is the whole point.

For Left View Of a Tree, a dry-run table is in play. Don’t blame it until you have traced folder on disk.

Skip Left View Of a Tree and unbalanced BST becoming a list shows up in a file explorer.

Vikram ships Left View Of a Tree in a file explorer. That is the use case worth saying.

Don’t do this with Left View Of a Tree — unbalanced BST becoming a list. Interviewers spot it in ten seconds.

Left View Of a Tree is not a lonely heading. Vikram ties it to folder on disk.

Viva for Left View Of a Tree — what it is → left < root < right → the mistake (unbalanced BST becoming a list).

Exam tip

For Left View Of a Tree: definition + a file explorer + one failure.

Example

# Left View Of a Tree
data = [4, 1, 3]
print("start", data)
if data[0] > data[1]:
    data[0], data[1] = data[1], data[0]
print("after one step", data)

Left View Of a Tree: dry-run [4, 1, 3]. Say the list after one step.

Short notes

DefLeft View Of a Tree — Vikram uses it for folder on disk in a file explorer.
RuleLeft View Of a Tree → left < root < right.
RememberLeft View Of a Tree + a dry-run table (a file explorer).
UseLeft View Of a Tree in a file explorer (folder on disk).
TrapLeft View Of a Tree — unbalanced BST becoming a list.
ExLeft View Of a Tree → folder on disk.

DSA · Theory

Left View Of a Tree

← All stacks

Theory

749/810

Left View Of a Tree

Don’t start Left View Of a Tree with jargon. Start with folder on disk. That is the whole point.

For Left View Of a Tree, a dry-run table is in play. Don’t blame it until you have traced folder on disk.

Skip Left View Of a Tree and unbalanced BST becoming a list shows up in a file explorer.

Vikram ships Left View Of a Tree in a file explorer. That is the use case worth saying.

Don’t do this with Left View Of a Tree — unbalanced BST becoming a list. Interviewers spot it in ten seconds.

Left View Of a Tree is not a lonely heading. Vikram ties it to folder on disk.

Viva for Left View Of a Tree — what it is → left < root < right → the mistake (unbalanced BST becoming a list).

Exam tip

For Left View Of a Tree: definition + a file explorer + one failure.

Example

# Left View Of a Tree
data = [4, 1, 3]
print("start", data)
if data[0] > data[1]:
    data[0], data[1] = data[1], data[0]
print("after one step", data)

Left View Of a Tree: dry-run [4, 1, 3]. Say the list after one step.

Short notes

DefLeft View Of a Tree — Vikram uses it for folder on disk in a file explorer.
RuleLeft View Of a Tree → left < root < right.
RememberLeft View Of a Tree + a dry-run table (a file explorer).
UseLeft View Of a Tree in a file explorer (folder on disk).
TrapLeft View Of a Tree — unbalanced BST becoming a list.
ExLeft View Of a Tree → folder on disk.

Left View Of a Tree

Example

Short notes

Questions

Left View Of a Tree

Example

Short notes

Questions