Find the Duplicate Number | With Proof | Follow Up Qns | Hare And Tortoise | Leetcode - 287

This is the 58th Video on our Arrays (1-D & 2-D) Playlist.
In this video we will try to solve a very famous array Problem - Find the Duplicate Number (Leetcode-287).

I will explain the intuition so easily that you will never forget and start seeing this as cakewalk EASYYY.
We will do live coding after explanation and see if we are able to pass all the test cases.

Problem Name : Find the Duplicate Number
Company Tags : AMAZON

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[AnadiHirpara]

bhai oppp your explanation is very clear and cut!!!
keep it up bhai🎯

[zfenbkr]

No one in this world can solve it in a 45 mins interview with optimal solution without already seen this question.it easy only if you done it before

[csechandrasekhar]

one guy said"you are blind if you can't meet a real guru" now im no more a blind.

[ajinkyakhete]

What a explanation, what a voice, what a content, what a way to tackle the problem everything is perfect ...

[EB-otuu]

One word - LEGEND
I agree, this is indeed the DSA king.

[manimanohar_]

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BTW I'm the same guy who created LinkedIn bcoz of you.😊😎

[pranavpranjal]

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[AJ-fbpk]

The best analogy for hare and tortoise is 2 runners(slow and fast) on a circular track. They will eventually meet at some point in a circular track.

[dhananjayshende]

Bhaiya your approaches becomes very helpful to all those facing problems in solving questions and their understanding 🙌 Keep Going

[sarthakyadav]

That means whenever there is a cycle and the value of the array is within the range of indices we can use this algo to detect the cycle and to find it's starting point.

[kusumjoshi]

You are definitely much better than overrated Stiver. You deserve millions of subscribers. Keep Going🙌

[taneyasoni]

19/30 (no travel ticket used till now) Thank you. congratulations for 9k subs

[rajkrishanmahajan]

Thanks for teaching slow = nums[slow];
fast = nums[nums[fast]]; i never know that this thing also present .

[RohitRaj-hlji]

A channel i can always rely on. I try to approach questions like you by making stories now 😊

[MaanyaSekhri]

Could not understand the mathematical part! Now its very clear.... Thanks for the wonderful explanation

[deepjyotidas]

Wow ! I have just understood hare and tortoise works but how it is working, no big youtuber was able to explain it. Today only I understood

[jagadeeshp]

what a timing just opened the channel for the ek number explanation ❤

[k-CE-OmkarPathak]

Sukriya!!

Solving with 3-4 approaches gives more confidence.

[sauravchandra]

The best intuition and explanation of the slow fast technique I have seen till now.

[iWontFakeIt]

I am grateful to god that i found your channel ❤