Link https://youtu.be/RnuwbsjGFYE * [x] Review https://github.com/codereport/An-Algorithm-Library/issues/5#issuecomment-792293274 * [x] Fix https://github.com/codereport/jsource/issues/206 * [x] Review https://github.com/codereport/jsource/pull/200 (first 1/3) * [x] Review https://github.com/codereport/jsource/pull/208
