DSA Text Editor — Undo/Redo Stacks, KMP Search & Word-Frequency Map

EDITOR — plain text, autosaved to history every pause

0 words 0 chars 1 line <1 min read

Each pause in typing pushes a snapshot onto the Undo Stack. Undo pops it off and pushes the current state onto the Redo Stack — classic dual-stack editor history.

Undo Stack (0)

Redo Stack (0)

Matching runs on KMP substring search — O(n + m) instead of a naive O(n·m) scan.

Find Replace with Case sensitive

No search yet

Counted with a hashmap in a single O(n) pass, then sorted — top words shown below.

0 words · 0 unique