To point out and clarify typical intermediate level semantic problems that cause a shell to behave strangely and counter-intuitively. To point out subtle caveats, corner cases and pitfalls that may cause an advanced user's otherwise working script to fail under future circumstances.See...
2471.Minimum-Number-of-Operations-to-Sort-a-Binary-Tree-by-Level (M+) 2459.Sort-Array-by-Moving-Items-to-Empty-Space (H) Parenthesis 032.Longest-Valid-Parentheses (H) 921.Minimum-Add-to-Make-Parentheses-Valid (M+) 1249.Minimum-Remove-to-Make-Valid-Parentheses (M+) 1541.Minimum-Inse...