synechron second round

 //Covered queries

typeof typeof 1

cursor

3 larget number without sorting

//How idexes are store internally string and number value

//How to get 10 million data form mongodb without limit and skip

//let s= "abcabcbb";//Output should be 3 abc

// console.log('1')

 

// function demoFunction() {

//  setTimeout(() => {

//      console.log('2')

//   }, 0)

// }

 

// const promise = new Promise((resolve, reject) => {

//  console.log('3')

//  resolve('promise result')

// })

 

// demoFunction()

 

// promise.then(() => {

//  console.log('4')

// })

 

// console.log('5');

//1

//3

//5

//4

//2

// Input: s = "abcabcbb"

// Output: 3

function lengthOfLongestSubstring(s) { let maxLength = 0; let start = 0; const charIndexMap = new Map(); // Map to store the index of each character for (let end = 0; end < s.length; end++) { const char = s[end]; if (charIndexMap.has(char)) { // If the current character is already in the substring, update the start index start = Math.max(start, charIndexMap.get(char) + 1); } // Update the length of the current substring maxLength = Math.max(maxLength, end - start + 1); // Update the index of the current character in the map charIndexMap.set(char, end); } return maxLength; } // Example usage: const s = "abcabcbb"; console.log(lengthOfLongestSubstring(s)); // Output: 3 Types of error

imperative vs declarative

uses of http interceptors use cases