Change construction note

Changed topic ordering

Merge branch 'main' of https://github.com/ialbluwi/psut-algorithms

Update README.md

Refine recurrence analysis explanations in notes

Fix wording in running time analysis section

Update recurrences-intro.md

Replace LaTeX recurrences with images

Merge branch 'main' of https://github.com/ialbluwi/psut-algorithms

Add recurrence examples and exercises

Add recurrence equation for search time complexity

Add recurrence equations introduction

Update README.md

Update README.md

Update backtracking.md