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Regular Expressions List of meta characters: . ---> Any one character ? ---> Zero or one + ---> One or more * ---> zero or more ^ ---> at the beginning of the string $ ---> at the end of the string [abc] ---> any one of a b c {m} ---> 'm' times {m,n} ---> at least m times, at most n times | ---> or \ ---> escape sequence character \s ---> a space \d ---> a digit \w ---> a word \b ---> a word boundary examples: \d ---> a single digit number (0 to 9) \d\d ---> a two digit number (0 to 99) \d\d\d ---> a three digit number (000 to 999) NOTE: ?, +, *, {} are used as Quantifiers (to represent quantity) \d{3} ---> same as above \d{3,5} ---> either 3 digit or 5 digit number hell?o ---> helo | hello hell+o ---> hello | helllo | helllllo | ... hrll*o ---> helo | hello | helllo | helllllo | ... he(ll)+o ---> hello | hellllo | hellllllo | ... S = "hi hello how are hello" hello ---> Yes ^hello ---> No h

As of Go 1.16, the   GO111MODULE   environment variable is treated as "on" by default, meaning Go expects to find a   go.mod   file, and no longer falls back to pre-module   GOPATH   behavior. If you want to go back to the pre-1.16 behavior, you now have to explicitly specify  GO111MODULE=auto , but you're far better off creating a  go.mod  file. See  https://golang.org/doc/go1.16#go-command  and  https://golang.org/ref/mod Source - https://stackoverflow.com/questions/67929883/go-error-go-go-mod-file-not-found-in-current-directory-or-any-parent-director 

 Amidst the massive layoffs in Tech industry in these tough times, there are many of us preparing right now for interviews. LeetCode is a good source to look at the current level of questions. Below is the list of questions currently being asked by Amazon in the last 3 to 4 months. -- 𝐆𝐫𝐚𝐩𝐡𝐬 1) Process Ordering - https://lnkd.in/dN4ErKyE 2) Number of Islands - https://lnkd.in/dHQJGhPJ 3) k Jumps on Grid - https://lnkd.in/dKM_ETsM) -- 𝐓𝐫𝐢𝐞 1) Finding Prefix in Dictionary - https://lnkd.in/dpRvFDq5 -- 𝐓𝐫𝐞𝐞 1) Binary Tree Top Down View - https://lnkd.in/dmun-Pn3 2) Traversing binary tree in an outward manner. 3) Diameter of a binary tree [Path is needed] - https://lnkd.in/dH-w_DQV -- 𝐒𝐥𝐢𝐝𝐢𝐧𝐠 𝐰𝐢𝐧𝐝𝐨𝐰 1) Contains Duplicates III - https://lnkd.in/djcWHTaX 2) Minimum Window Substring [Variation of this question] - https://lnkd.in/dPfnQZmr -- 𝐋𝐢𝐧𝐤𝐞𝐝 𝐋𝐢𝐬𝐭 1) Reverse a Linked List II - https://lnkd.in/diHAJZUJ 2) Remove Loop From Linked List - https://lnkd.in/

  File Management Open File Explorer Type \\wsl$ on address bar Press Enter

 System Design rounds are an important part of the Software Engineering interview process because they test a candidate's ability to design and implement large-scale systems. Here is the list of some amazing resource on System Design - ✅ Things you must know in System Design 👉System design basics: https://bit.ly/3SuUR0Y 👉Horizontal and vertical scaling: https://bit.ly/3slq5xh 👉 Load balancing and Message queues: https://bit.ly/3sp0FP4 👉High-level design and low-level design, Consistent Hashing, Monolithic and Microservices architecture: https://bit.ly/3DnEfEm 👉 Caching, Indexing, Proxies: https://bit.ly/3SvyVDc 👉 Networking, How Browsers work, Content Network Delivery ( CDN): https://bit.ly/3TOHQRb 👉 Database Sharding, CAP Theorem, Database schema Design: https://bit.ly/3CZtfLN 👉 Concurrency, API, Components + OOP + Abstraction : https://bit.ly/3sqQrhj 👉 Estimation and Planning, Performance: https://bit.ly/3z9dSPN 👉 Map Reduce, Patterns, and Microservices: https://bit.ly/