Striver SDE sheet https://takeuforward.org/interviews/strivers-sde-sheet-top-coding-interview-problems/

Striver DSA sheet https://takeuforward.org/strivers-a2z-dsa-course/strivers-a2z-dsa-course-sheet-2/

Strivers last moment sheet https://takeuforward.org/interview-sheets/strivers-79-last-moment-dsa-sheet-ace-interviews/

DSA- 50 days Core Subj- 26-30 Days