Design Underground System | Full Thought Process | Bloomberg | Amazon | Leetcode 1396

[@riyakansal3312]

One of the finest explanations... and finally I earned the MAY batch, thanks to you sir💖💖

[@codestorywithMIK]

So happy to hear that. Feel free to share that everywhere to spread the motivation Thanks again

[@mohithadiyal6083]

simply amazing

[@codestorywithMIK]

Thanks a lot Mohit ❤️

[@souravjoshi2293]

Never fail to mesmerise me. You have a unique way of teaching bro. People will talk about you in future.

[@tutuimam3381]

Amazing explanation

[@AlishaKhan-ww3io]

Finest tutor on KZbin

[@UECAshutoshKumar]

Thank You!

[@sidharthdhiman4522]

best method to solve the queison is through story sir , amazing , i did figureed out of checkin map and type also but wans't able to get the checkout mp and what would be the key and value but when you approach the problem through reverse method finding first checkoutmap and through that you ind what should be the checkin is amazing approach

[@codestorywithMIK]

Thank you Sidharth ❤️❤️

[@floatingpoint7629]

thanks for this. it was helpful i was able to it myself after seeing the story points

[@anuppatankar4294]

Great video 👍🏻

[@codestorywithMIK]

Thanks a lot Anup ❤️❤️

[@wearevacationuncoverers]

This is the one stop solution to all my problems. ❣

[@mewaconite]

thank you for creating this video, always love your explanation ❤

[@codestorywithMIK]

Thanks a lot ❤️❤️

[@shikharpandya4927]

thank u sir

[@codeandtalk6]

❤

[@codestorywithMIK]

❤️❤️

[@boomburstshorts2347]

Finally the video came 😁

[@codestorywithMIK]

Sorry for delay today . Little hectic day. Thank you for trusting my channel ❤️

[@tauquirahmed1879]

Yeah mera pehla view ❣️

[@codestorywithMIK]

Thanks a lot ❤️❤️

[@thephalcon]

Sir javascript se bhi implement kriye please

[@codestorywithMIK]

Hello there, Unfortunately I am not well versed with Javascript Data structs but I can help provide the code from other source. Please find it below . I hope that helps : var UndergroundSystem = function () { this.checkInData = new Map(); this.journeyData = new Map(); }; /** * @param {number} ID * @param {string} checkInStation * @param {number} checkInTime * @return {void} */ UndergroundSystem.prototype.checkIn = function (ID, checkInStation, checkInTime) { this.checkInData.set(ID, new CheckIn(checkInStation, checkInTime)); }; /** * @param {number} ID * @param {string} checkOutStation * @param {number} checkOutTime * @return {void} */ UndergroundSystem.prototype.checkOut = function (ID, checkOutStation, checkOutTime) { let checkIn = this.checkInData.get(ID); this.checkInData.delete(ID); let journey = checkIn.checkInStation + "->" + checkOutStation; if (!this.journeyData.has(journey)) { this.journeyData.set(journey, [0, 0]); } this.journeyData.get(journey)[0] += checkOutTime - checkIn.checkInTime; this.journeyData.get(journey)[1]++; }; /** * @param {string} startStation * @param {string} endStation * @return {number} */ UndergroundSystem.prototype.getAverageTime = function (startStation, endStation) { let journey = startStation + "->" + endStation; return this.journeyData.get(journey)[0] / this.journeyData.get(journey)[1]; }; function CheckIn(checkInStation, checkInTime) { this.checkInStation = checkInStation; this.checkInTime = checkInTime; }

[@honey6567]

bhaiya please code force bhi start kr do

[@codestorywithMIK]

I will plan that soon. Just planning to first complete important playlist of Graph, DP etc Then i will start uploading GFG POTD, Contests, codeforces etc

[@kuchtha9982]

Mera second comment😊

[@codestorywithMIK]

Thanks a lot ❤️❤️

[@honey6567]

their are more child come on youtube to teach algo those Algo that are already cover in most youtuber

[@honey6567]

every think and every code teaches fail on front of you like , labb labb labb;.. every youtuber are smill knowladege on data structer

[@codestorywithMIK]

Means a lot Honey ❤️❤️❤️

[@honey6567]

@@codestorywithMIK bhaiya please please codeforce bhi start kr do na ..

[@yuvhrajverma9665]

Sir can u plz tell me what's wrong with this code , only passes 48 testcases class UndergroundSystem { class pair{ int id,t; pair(int id,int t){ this.id=id; this.t=t; } } HashMapcheckin; HashMapcheckout; public UndergroundSystem() { checkin=new HashMap(); checkout=new HashMap(); } public void checkIn(int id, String stationName, int t) { ArrayListl=checkin.getOrDefault(stationName,new ArrayList()); l.add(new pair(id,t)); checkin.put(stationName,l); } public void checkOut(int id, String stationName, int t) { ArrayListl=checkout.getOrDefault(stationName,new ArrayList()); l.add(new pair(id,t)); checkout.put(stationName,l); } public double getAverageTime(String startStation, String endStation) { ArrayListl=checkin.get(startStation); ArrayListl1=checkout.get(endStation); int c=0; double s=0; for(pair p:l){ for(pair p1:l1){ if(p.id==p1.id){ s+=(p1.t-p.t); c++; } } } s/=c; return s; } }