pattern questions

`String.prototype.replace` replaces the first occurrence of a substring or pattern (regular expression) with a new substring. To replace all occurrences, a global regular expression must be used. 

const str = 'hello world';
const newStr = str.replace('world', 'JavaScript');
console.log(newStr); // 'hello JavaScript'

Common patterns for state management in large React applications include using context for global state, adopting state management libraries like Redux or Zustand, implementing state normalization, and employing custom hooks to encapsulate state logic and improve modularity.

Use a sliding window and hash maps to compare character counts. Slide the window across the string and check if the counts match. For example, in 'cbaebabacd' with pattern 'abc', the start indices of anagrams are 0 and 6.

I use the 'Pattern Fill' feature and 'Pattern Editor' to create a custom pattern, defining the repeat and offset.