Iterator

Last updated: May 2, 2026

Table of Contents

0) Concept
0-1) Types
0-2) Pattern
1) General form
1-1) Basic OP
2) LC Example
2-1) Peeking Iterator
2-2) Flatten Nested List Iterator

Iterator

0) Concept

0-1) Types

0-2) Pattern

1) General form

1-1) Basic OP

2) LC Example

2-1) Peeking Iterator

python

# LC 284. Peeking Iterator

2-2) Flatten Nested List Iterator

python

# LC 341. Flatten Nested List Iterator