Leetcode Two Sum Solution | Coding Interview Question 

Glad it helped!

learn Algorithms and Data Structures: www.udemy.com/course/coding-interview-crash-course-for-web-developer-2020/?couponCode=ADA6B72288D49A1CAE25

It's my pleasure. Thanks for watching!

Just released a new video . Please do check it out. !

learn Algorithms and Data Structures: www.udemy.com/course/coding-interview-crash-course-for-web-developer-2020/?couponCode=ADA6B72288D49A1CAE25

More to come! I am planning to make release leet code videos on regular basis. Thanks for watching!

Yatchan , set is the right way of using maps. However the second forloop is not needed. you can simply use comp.has in the first loop.

@@Techsithtube You're right, that's much simpler! However, from what I'm aware, you can't just return a value from inside of forEach loop and exit it. Instead you can push the pair to some other variable and return it after the loop ends. That way it would work even when there is more than one pair of numbers satisfying the equation. There's also an option to use reduce(): const comp = new Map() return(nums.reduce((_acc, num) => { comp.set(target - num, nums.indexOf(num)) if (comp.has(num)) { return _acc.concat([[nums.indexOf(num), comp.get(num)]]) } else return [] }, [])) I would also be happy to see the leetcode video series. Keep up the good job!

I didn't even know that it is possible to use bracket notation with maps. It seems that when you add a property using bracket notation it just becomes a generic property of that map object, but it is not iterable (it won't be revealed in a for/of loop). When you add properties to a map object using set(), those properties will be iterable.

More to come! I am planning to make release leet code videos on regular basis. Thanks for watching!

@@Techsithtube Thank you so much...

Great to hear! keep up the good work!

Yes mohit, most companies ask for DS and Algo, and its not that hard if you practice for atleast a month. I will keep making more such videos . keep on practicing . Good Luck with the interviews.

Satyadeep, I will keep making more such videos and create a play list from easy to hard. I am also planning to do design question on ui side and some architecture level.

@@Techsithtube please make videos for design questions on ui.

srinivasa, Sure I will add that to the queue. Thanks for the suggestion.

comp[nums[i]] if returns undefined than we know we have not found the value . putting it in if statement converts it to a boolean. if returns something than true else false.

Got it! Thanks for clearing that up.

Send me an email and we can set it up. you can find my email on the channel page.

More to come! I am planning to make release leetcode videos on regular basis. Thanks for watching!

JavaScript is bit weird, arrays are also linkedlists. However, the purpose of using specific data structure in an interview is to assume that you know about the data-structure and your knowledge of data structure is clear. underlying implementation of that data-structure doesn't matter.

this would work for any array with numbers. yes map has quick lookup which means I dont have go through all the elements to find the value so you avoid one more for loop

can you find the answer for that

Here you go, I created a ru-vid.com/group/PL7pEw9n3GkoWJcepB1U9OaOKMXPJTroZ- for all the videos on similar topics.

Brute force is obvious but not optimal . In this case you can have two loops and compare every number with every other number to see if it adds up to the total .

leetcode site is a pretty good reference , they give you solutions to some questions for free and if you pay little money, you get access to all the solutions.

@@Techsithtube sir ....i want to request one thing....please make some videos regarding jwt authentication,token refresh,autologout in react....