Solve any Pattern Question - Trick Explained | 22 Patterns in 1 Shot | Strivers A2Z DSA Course

[@takeUforward]

Let's march ahead, and create an unmatchable DSA course! ❤ Do consider to give us a like, and a subscribe, means a world to us..

[@giit85]

❤️

[@bhanupratapsharma6158]

competitive programming content plz sir how to reach candidate master i was stucked on specialist

[@tuhindas9777]

Thank you dada love from Kolkata

[@23cash86]

STL next?

[@techyouknow8026]

Happy new Year , Please Sir upload all the basics lecture within 2 months as I trust you so I can request you please upload frequency maintain , I like all your video after watching it completely, also you are helping others to achieve their new year resolution.

[@sachinboreoffl]

Tip: When you're printing spaces in a pattern, replace the space with any other symbol like this "-", it helps in understanding what we are doing.

[@RahulChacko]

❤

[@jaydeeppatil7936]

Thanks a lot it really helped me

[@anusha6033]

nice one thanks for sharing

[@suryasaipalthi]

thanks for sharing that did change my way of thinking somewhat

[@harshyadav1214]

very good approach

[@sumitapathak2900]

I was losing confidence in my DSA skills after being away for so long. This video sharpened my thinking as well as brought back that confidence. Thanks a lot !!

[@FRACTALUMAR]

did you solve them by your own or first watched ,then, practice them ....

[@vahramirpunit]

@@FRACTALUMAR i first watched whole video once, then i solved most of the problems on my own, if needed i came back to video.

[@muhsin.k]

Intro: 0:00 BuildUp Logical Thinking w/ patterns: 0:20 Pattern_01: 1:34 4 Rules for solving patterns: 2:24 Pattern_02: 14:17 Pattern_03: 17:33 Pattern_04: 19:53 Pattern_05: 21:00 Pattern_06: 23:39 Pattern_07: 24:33 Pattern_08: 31:10 Pattern_09: 34:16 Pattern_10: 35:12 Pattern_11: 39:22 Pattern_12: 42:15 Pattern_13: 46:52 Pattern_14: 48:42 Pattern_15: 50:57 Pattern_16: 53:03 Pattern_17: 54:42 Pattern_18: 59:45 Pattern_19: 1:01:28 Pattern_20: 1:06:36 Pattern_21: 1:12:29 Pattern_22: 1:15:41 Like!!: 1:21:17

[@takeUforward]

Thankyou 🙏🏻 added

[@desimemerrudhra8394]

@@takeUforward where r u bro, new lectures 🤔🤔😭😭

[@rajeshvarma2162]

In Pattern18, we should not hardcode the value 'E', It should be dynamic. void pattern_18(int n) { for (int i=0; i

[@Hades0210]

Exactly

[@ictfan-ly8gh]

Yes bro u are 👍

[@ictfan-ly8gh]

He could have use Char ch= 64+n

[@kartikgtm7]

its wrong bro...The correct solution is.... for(int i=0;i

[@ImaamJIJ]

we can use this for coding ninjas practice for (int i = 1; i ='A'+(n-i); ch--) { System.out.print(ch+" "); } System.out.println(); }

[@md.ualiurrahmanrahat2400]

saw a lot of videos before to understand pattern 22. But never got it. The way you solved it!!! What can I say. We owe you big time brother.

[@eleveneleven4195]

for code 14 we can also try :🙂 for(int i=1;i

[@dllychoudhary7586]

I literally did the same... because there was error that character can not add with int..so i did with your method

[@honourable8816]

​@@dllychoudhary7586 You can use cout

[@TiyaBhatt4-de8sq]

@@dllychoudhary7586 I am facing the same error in question 16 . What should I do?

[@yashiktaneja673]

​@@TiyaBhatt4-de8sq char ch='A'; for(int i=1; i

[@raavanan00792]

Thanks for the great content ❤ @tip for the pattern 18 the logic in the video is hardcoded for 'E' letter alone . Kindly utilize the below solution. void alphaTriangle(int n) { for(int i=0;i

[@HarshDPatil123]

i think your code does opposite . E E D E D C E D C B E D C B A

[@HarshDPatil123]

maybe letter = 'A + n-i-1

[@chiragPatel22c]

last pattern is mind blowing!!! hard to get that logic at first sight.

[@dhruvdonsahu9972]

i am still confused

[@debashmansarbadhikari6196]

For pattern number 12 we could also have done the following : int space = 2 * ( n - i )...ofcourse this variable would have to be defined within the scope of the outer loop. Besides, the problem given on the sheet and the problem redirected to by the link are actually slightly different. Here's the code snippet for solving the problem redirected to by the link : void printTriangle(int n) { for(int i = 1; i

[@abhisheksantoshbhambe7617]

thanks dude!! i thought y im not getting it, and u coreected me

[@nisha1841]

Bhaiya learning DSA from your AtoZ sheet . i am in final year I can't thank you enough for bring light in my dark future..when everyone is saying that "tumse an ho payega "I finally decided that "ab mujhse hi ho payega" thank you bhaiya .and please agle 3 month take intermediate level ka DSA sikha do.

[@AryanKumar-qj9ud]

Same stry wish the best

[@uniquescience7047]

All the best to you😁

[@known878]

Bhai tumne bola ki 3 month takk intermediate DSA sikha do aur tumhare comment ke bhi 3 months ho gaye to sikh liye kya intermediate wala?

[@nisha1841]

@@known878 ha bhai intermediate level ka almost complete hai . Strive ki AtoZ sheet se padha hai maine usme se question bnao shi rhega

[@prajjwal5520]

placement lg gyi?

[@SurabBarve]

for 7th pattern if you use the formula j

[@samuelfernandes3301]

striver i think you made a little mistake in pattern18 your considering j as E, but the start letter depends on number of rows, therefore the code will work for more test cases void pattern18(int n){ for (int i = 1; i

[@ankushhv6972]

Hey Striver, i think for the pattern 18, we should not directly start from 'E', I think according to pattern we should be starting form ('A' + n - i + 1) until ('A' + n), for(int i = 0; i < n; i++) { for(char ch = 'A' + (n - i - 1); ch < 'A' + n; ch++) { cout

[@shaharslan3372]

Yes, Ankush I also noticed this. Using this approach makes it dynamic for all inputs of 'n'. Good Job

[@nehathakur40]

you are an inspiration for programming faternity! loved the way you teach. The ease with which you have taught recursion and dp is commendable. i get to learn every day from you. Thank you for being light in lives of programmers.

[@raunak276]

fr

[@sainaid]

no doubt striver bhaiya has made this playlist the best way.

[@Cvx_ishere]

Literally, breaking whole concepts into 3 steps really really help me as beginner to understand patterns. Thankyou striver b :)

[@soubhikghosh6564]

It doesnot come interviews i agree. But still i would urge all to do this exercise... It will help all Software engineers or aspirants to improve their problem solving skills by seeing patterns

[@priyankabhagoriya276]

Hmare clg m placement m ye pattern hi puche the bs 3 logo se bne the bs phle ye dekh liya hota to syd mera bhi placement ho jata but ab practice kr rhi hu

[@HarshDPatil123]

@@priyankabhagoriya276 did you get placement ? off campus?

[@sasmitsirroco]

For pattern 7, why print spaces after astrix? Simply cout

[@mehtabmultani3194]

39:22 tip for pattern 11: if the sum of every single (row+column) is 'even' then have to print 1 else 0 if((i + j) % 2 === 0) print(1) else print(0)

[@satyam-seth]

void printPattern(int n) { for (int i = 0; i < n; i++) { for (int j = 0; j

[@012srishtisaini7]

@@satyam-seth thankss.. i was having a bad time because of this

[@abhisheksahu3453]

for pattern 15 even more simpler code : void printPattern(int n) { int i; for(i=0;i

[@sabashh8208]

For pattern18 if we don't want to hardcode 'E' and use it for other row numbers then we can make small change as char initial = (char) ('A'+ (n-1)); for (int i = 0; i < n; i++) { for (char c = (char) (initial - i); c

[@NikitaNair]

I was looking for this!!!

[@anishchhabra6085]

Python code for the same: for i in range(n): char = 65 for j in range(i+1): print(chr((n-i-1)+char),end="") char += 1 print(' ',end="")

[@ritusingh8616]

Thank you for this content! This video helped a lot! Kindly correct the code for pattern 18 to adapt to different values of input... void print18(int n){ for(int i=1; i

[@tusharkumar7963]

The best video on solving patterns on KZbin! Can't thank you enough!!!😀😀

[@PrabhjotSingh-o4s]

If You Start From Loop from 0 the formula will be lil bit easier helps more to understand for a beginner 23:18 For Printing ***** **** *** ** * for(int i=0;i

[@Manish-wk8ni]

Thank You, we are all hooked up. This is gonna be a Great Series.

[@prathameshdhanajigandule4299]

The better and correct code for pattern no.18 1:01:00 would be : void pattern18(int n){ for(int i = 0 ; i < n ; i++){ for(int j = i ; j >= 0 ; j--) cout

[@keisergg8701]

yep! I did same as you, here is my java code if anyone cares public static void pattern18(int n) { for (int i = 0; i < n; i++) { char ch = 'A'; char chs = (char)(ch + (n-i-1)); for(int j=0; j

[@prathameshdhanajigandule4299]

@@keisergg8701 Yes bro it's correct I care

[@vikasverma5685]

​​@@keisergg8701 public static void pattern18(int n){ for(int i = 0; i < n; i++){ for(char ch = (char)('E'- i); ch

[@shaharslan3372]

Edited : Saw you correct it in the next question :-D For pattern 19 , I don't think we should hard code the number of spaces as 8 and then keep on decreasing the number by 2 with each iteration , as it will only work for input n = 5. Rather there should be a general formula : for(int i = n ; i >=1; i--){ for(int j =1; j

[@AdityaVerma-hh1ox]

This is wrong bro

[@SpewFactsBeTrueToYourselves]

i did pattern 19 myself by running 6 for loops and without seeing strivers explanation based on previous patterns knowledge , it took me 2 hrs to first draw it on book and break it into smaller chunks and then write code, row number is the game changer in second half rhombus

[@vidhveshchangalasetty]

18th pattern We should define a const char starting alphabet of each line by taking the char ch='A'+n-i (before starting the outer for loop) void alphaTriangle(int n) { char ch = 'A' + n - 1; for (int i = 0; i < n; i++) { for (char c = ch; c >= ch - i; c--) { cout

[@hasanuzzamananuz8270]

More than the premium course I have learned a lot. The lecture delivery, explanation, and expression are great, and that makes me concentrate more to watch the video. I have done all the problems on my own using your 4 pattern-solving rules. Hats off sir ❤❤❤❤❤❤❤❤❤❤

[@zenmonk29]

today i lost my phone. it was 19 days old. went to police station to file a report, the inspector had the same name as you

[@hasanuzzamananuz8270]

@@zenmonk29 So what, Multiple people have under the same name.

[@damolaOnikoyi]

Thank you Striver, preciate ya!!. I just completed all the pattern problems. The last one was quite tricky as I did not quickly understand your solution. However, I have provided my solution below for others that might find it helpful and maybe easier to understand. Intuition: Fill the 2D array (named result) with the values (n, n-1, n-2 ...) then just simply print it out (row x column)👍🏾. You can fill the result array like this : 1. Outer loop fills the layer (A layer is a square ring of numbers). 2. Get the number to be filled per layer => int num = n - layer. Hence if n = 3, layer = 0 (first one) -> n , n - 1, n - 2 ... so we print 3, 2, & 1 per square ring. 3. Middle loop iterates over the rows of the current layer. 4. Inner loop iterates over the columns of the current layer. static void pattern22() { int size = 2 * n - 1; int[][] result = new int[size][size]; for (int layer = 0; layer < n; ++layer) { int num = n - layer; for (int i = layer; i < size - layer; ++i) { for (int j = layer; j < size - layer; ++j) { result[i][j] = num; } } } for (int[] row : result) { for (int col : row) { System.out.print(col + " "); } System.out.println(); } }

[@ramfattah211]

The last pattern took me some time but I just figured it out and i'm so happy 🧠🤯. Such a great feeling😊. Thank you Striver for this amazing content.

[@keerthanasathish3684]

Alternate code for pattern 5 has runtime 17ms void seeding(int n) { for(int i=0;i

[@neoteric_nk]

Nice explanation sir! Just wanna give a general code for Pattern 18. void pattern18(int n){ char ch= 'A'+n-1; for(int i=0; i

[@Seraexplores]

Pattern 19 simpler: def pattern19(n): for i in range(1, 2*n + 1): stars = n-i+1 if i > n: stars = i-n spaces = 2*n - 2*stars for j in range(stars): print("*", end="") for k in range(spaces): print(" ", end="") for j in range(stars): print("*", end="") print()

[@gunasekarb3100]

whoever found the logic for the pattern 22 must be an alien.

[@winter_hope_]

🤣

[@LUchiha-dt6xv]

I did found the logic myself(different but same answer though) but the logic used here is damn crazy🥲

[@gunasekarb3100]

@@LUchiha-dt6xv did you use spiral way?

[@LUchiha-dt6xv]

@@gunasekarb3100 Idk about that😅, but divided the whole patter into 4 parts & designed the parts & framed them one by one(basically the brute force approach u could say)

[@abhishekpattanayak1443]

@@LUchiha-dt6xv you can also try using chebyshev distance for each (i,j) from the middle-most index

[@nexxerjm348]

Patter seventeen :@58:53 Solution is very Here is approach first print space then print ascending order charcater till i Then print descending order till i-1 First loop for space: j=1 to j

[@shuskane]

UNDERSTOOD 👍 👍👍 👍👍👍 👍👍👍👍 👍👍👍👍👍

[@kshitijsingh1990]

haha smart!

[@Apheta_a]

let n=5 for (let i=0;i

[@udaykumar-jj1gw]

@@Apheta_a 😂 😂😂 😂😂😂 😂😂😂😂 😂😂😂😂😂

[@icodecrush]

39:39 Pattern11 Could be done using different logic. // Outer loop = rows/Lines for (int i = 0; i < n; i++) { // innerloop = Collumns for (int j = 0; j

[@spdks3485]

HAPPY NEW YEAR SIR HAVE A GREAT YEAR AHEAD AND WE ARE VERY GLAD TO GET THE HELPING PERSON LIKE YOU FOR BEGINERS LIKE US.

[@anil-chaturvedi]

Thank you for this logic-building lecture. I'm feeling confident about pattern questions.

[@sphereofcalmness2488]

The best video on how to code patterns. Step-2 is GOLD!

[@lekhanachidananda]

Thank you Striver! I really love your videos. Small suggestion: you could have calculated time and space complexity for all the patterns.

[@sathvikvutukuri9179]

I think most of them took O(n^2)

[@frekkytanish]

for pattern 16 : int n; cin>>n; for(char ch = 'A' ; ch < 'A'+ n ; ch++ ){ for(int cha = 'A' ; cha

[@detaqwer]

Hey Raj, for pattern 11 we can try this code as well which is simpler void print11(int n) { for (int i = 1; i

[@chethanprabhu4475]

Can simplify even further void print11(int n) { for (int i = 1; i

[@blockyquasar]

@@sagarshah5341 kaise bhai? same hi hai dono me, n square hai dono me

[@sagarshah5341]

@@blockyquasar I do not remember why I said that!

[@shivendradwivedi8887]

In pattern 20 , for stars and spaces we can do this way also int stars = i; int spaces = 2*n - 2*i; if(i > n){ stars = 2*n - i; space = 2*i - 2*n; }

[@mrnonsenseju]

New exciting videos in new year... Thanks Striver Bhaiya.... Love from Jalpaiguri

[@karthikeyabollu7121]

pattern 20 is same as pattern 19 but just interchanging the spaces and stars variables. that means no.of stars in pattern 20 will be same as no.of spaces in pattern 19 and vice-versa.

[@takeUforward]

Good observation

[@itz-aksh]

pattern 19: we can also combine both upper and inner part by declaring variables for conditions and so avoid writing loops for 3 more times.. void print19(int n){ for(int i=1;in/2){ conditionstar=i-n/2; conditionspace=2*(n-i); } else{conditionstar=n/2-i+1; conditionspace=2*i-2;} for(int stars1=0;stars1

[@UECHarshaVardhanRavipalli]

Done these all max by my own... feels confident enough to go ahead!! TQ Bhai!!😇

[@preethamreddy9610]

Understood. Today is November 18th, 2024, i have started my journey with Strivers SDE sheet, i will come here periodically to update my status and my offers! Wish me luck!

[@4444-c4s]

A little catch for Pattern-7. Don't need to print last spaces. Just 2 inner for loops will work.

[@konstantinossimatos3466]

31:00 void printX(int row, int col){ for(int i = 0; i < row; i++) { for(int j = 0; j < col; j++) { if(i+j

[@Narasimha-ms2up]

Really amazing teaching after listening 8th to 11th pattern , without any error i do 12th by my own❤❤❤

[@PriyankaKumari-cm3kq]

Problem no. 18 code- void alphaTriangle(int n) { for(int i=0;i

[@KeepCoding69]

Better solution for Pattern no.12 (using only 2 for loop) : #include using namespace std; int main() { int n = 9; int start = 1; int end = n*2; int temp; for (int row = 1; row

[@BALAJITVECstudent]

for pattern 7 i have tried with two inputs and using conditional statements it works well with the input of n=5 and m=9 The logic of the code is for (int i = 1; i

[@sukhpreetsingh5200]

Revision done😄

[@mr.batman2348]

hello paji koi dc ya linkedin profile wagera

[@mahirshah763]

In Pattern 22, if someone is coding in c language, there is no min() function so it can be written like this by creating a function: #include int minimum(int a,int b, int c, int d); int main() { int num=4; int n=2*num-1; for(int i=0;i

[@nithin999jw]

you can simply edit

[@luckshaeey]

last pattern was awesome. I followed another method and figured out some another pattern and symmetricity in it. But your approach was very informative too.

[@darkexodus6404]

Same. From outermost square to the innermost square. I did it like this.

[@Jaishreeram-ly2jm]

can u share your method?

[@sheetaljain3569]

For the 11th Pattern, I thought if both column and row are of the same type(i.e. (even, even) and (odd, odd)) the sum of the row will be even, then we have to print 1 and when are different the sum is going to be odd. So, I tried it in a different way. Here's my approach: for(int i=0;i

[@cinime]

Understood! Super amazing explanation as always, thank you very much!!

[@ChetanRajput-ju2sd]

problem 22 - For Python: I found below approach most optimised. If u observe (row wise): 1st half and 2nd half is a mirror (ignore middle for a while.) 1st half of a row is a combination of two parts: a - fix part b - decremental part for eg , for n = 6 (considering just 1st half of a row) row1 : 666666 -> all fix , no decremental row2 : 655555 -> 6- decremental , 55555 - fix row3 : 654444 -> 65 - dec , 4444 - fix row4 : 654333 -> 654 - dec , 333 - fix derive the code for dec and fix , then combine the string to generate 1st part of a row , then neglet last character and reverse the result , concatenate both original and reverse to get full row. time difference (n = 500 ) 1. n - min() approach : 256ms 2. above approach : 54 ms

[@Tyler_Durden.999]

Is anyone doing it using Java?

[@xihadityajaiswal8797]

Me

[@harikrishnapatel7514]

yes

[@shaunakmajumdar5278]

Ofc

[@vikrant3640]

Ofc😊

[@ProgramerRaj]

Yeah bro

[@sanjanakumari984]

for question no. 18, hard coded value is written JavaScript solution - function printPattern(n) { for (let i = 1; i < n+1; i++) { let row = ""; for (let j = 1; j < i+1; j++) { row += String.fromCharCode(65 + (n - j)) + " "; } console.log(row.trim()); } } printPattern(5); python soln - def alphaTriangle(n: int): for i in range (1, n+1): for j in range(1, i+1): print(chr(65 + (n-j)), end = ' ') print() pass

[@k-gos]

What will be the frequency of lectures and will you teach the complete DSA in this course? Also what will be the tentative duration of this course? Great lec btw

[@meghanshrao5878]

/// Pattern 14 :(ALTERNATE) void print14(int n){ for(int i=0;i

[@rishabh_pant]

Source code ? I have learned Star space star patterns with your trick ❤️‍🔥. It would be better if you normalize and use loop from 0 or 1 for every problem :) cheers !!!

[@aseemsharma4643]

For pattern 7: if the spaces conditions seems difficult, there is a simpler way to reverse loop for spaces and have forward loop for star, given that forward loop will be running (i*2) times. For eg: outer loop: for (int i = 0; i < rows; i++) for (int j = rows; j > i; j--) -> 1st Spaces for (int k = 0; k Stars for (int j = rows; j > i; j--) -> 2nd Spaces. Note: rows can be any input.

[@tgxgaming5880]

31:00 What if we don't print the last space ? Like, After the stars. Does it improve TC(Time Complexity)?

[@BoraSaiVenkataPraveenKumar]

Understood. A very clear explanation on understanding the patterns and clear approach on printing the patterns.

[@rishav144]

one of the best videos 🔥

[@GauravThinks]

bhai poori to dekh le pehle

[@yikes3807]

@@GauravThinks xd

[@SoumeshRanger111]

Thank you for the video, If possible could you please share the tasks.json file here, i.e. how you're writing to the output file simultaneously.😊😊

[@mintobit]

As an alternative solution for pattern #22: every number equals to the distance from center + 1. private static void numberPattern(int n) { for (int i = -n+1; i < n; i++) { for (int j = -n+1; j < n; j++) { System.out.print(1 + Math.max(Math.abs(i), Math.abs(j))); } System.out.print(" "); } }

[@Yash_Raj_J]

If possible can you tell us another method for pattern 22? I did not understand. BTW THANKS A LOT BHAIYA

[@BhuvaneswariSura]

import java.util.*; class Pattern { public static void main(String args[]) { int n=7; int c=((n+1)/2); for(int i=0;i

[@jayeshb9323]

Absolutely loved the video..the way you explained it made it very easy to understand complicated problems

[@yogeshverma7366]

Hey Striver, for the pattern 18, I guess the code will not work for n > 5, it will start printing characters lesser than 'A'.

[@varunsde9533]

to make it as per any value of n, make the following changes: char ch = (char)((int)'A'+n-i-1); for(int j=0;j

[@kumaraditya5513]

A different yet similar approach to Pattern 11 (java) 39:22 int num = 1; for (int i=1; i

[@graviton001]

Pattern 5 my way of doing :- void print5(int n){ int a,b; for(a=1; a=a; b--){ cout

[@Sagardeep_Das]

For pattern 18 this can be tried too. It can print decreasing pattern for any no of alphabets (don't exceed n = 25 in input) void pattern18(int n) { int count = n; for(int i = 0; i

[@programmingwallah2905]

One of the best man in coding community

[@AdityaRBhagat]

for pattern 18 we can use:: void pattern18(int n) { int i,j; for(i=1;i0;j--) { char start = 'A' + n -j; cout

[@Codeeater-vq2pz]

Patern 5 alternate approach void seeding(int n) { for(int i=1; i= i ; j- -){ cout

[@user-zy3mz6ml7c]

You're answer for question 18 only gets correct answer when n is 5 because you hardcoded E into the for loop. The answer should be: void print18(int n){ for (int i=0;i

[@samuelfernandes3301]

you can try this for pattern 12 here space is decreasing in multiple of 2. and the formula is 2*n - 2*i void pattern12(int n){ for(int i=1; i

[@vandanpatel4905]

For pattern 8, we can also simply reverse the numbers in outer loop: for( int i=n; i>=1; i--){ for ( int j= 1; j

[@krishnagarg2583]

for the 5th pattern you can also do for (int i = 1; i = i; j--) { cout

[@silentsoul52]

problem no 18 can be solved by: for(int i=1;i

[@HemasaicharanK]

Thank you for your clear and concise explanation. I used to follow you for so long on LinkedIn, but didn't get a chance to watch your content. Now is the time for me to get prepared for a DSA interview.

[@dhruvishah9077]

What I will suggest that after understanding how it works, the inner loop and outer loop, just go ahead and have a fun with that, first 3-4 are quite easy, and you just have to figure out the formula, the key point is you trying. Try with pencil and paper if normally you are not able to figure it out, your idea can be different, and this way you will learn a lot more than just straight up just watching this video. For an example, in pattern 11, we have to figure out the 1 and 0 ant even and odd place, I did it using i+j%2, if that's 0 then I noticed we have to print 1 otherwise print 0, then in question 2, instead of do minus 2 I just print 2 space, also as he mentioned you can also do k=n-1; k>0; k-- for space, decrement instead of increment, this way you will learn both. My point is just practice it by yourself, I am watching this video after completing all those pattern, I had issue with the last one, that's the only one I took help from GPT, after building my logic was not sure how to implement in java, and here after solving every question, I am watching how did he solve it, comparing my approach and see which one is performing better. So the point is, figure out your own way, learn these key 5 rules, but some pattern you have to figure out your own, you might come up with something smart, and that feeling is amazing. Happy Learning : ) You are not alone in this

[@sunny-teaches-sometimes]

For pattern 18, instead of assuming output always begins with char 'E', we could do this instead. Character A is 65 in ASCII, so the ending character at start would be => 65 + n -1 Since we are then decrementing the ending character at the start of every row => 65 + n - 1 - i While printing characters on a row's columns, we are incrementing the character to be printed => ord(rowStart) retrieves ASCII for the starting character for that row. ord(rowStart)+j retrieves the ASCII for the next character to be printed in that row chr(ord(rowStart)+j) retrieves the character for the respective ASCII Here's the python code for this pattern def pattern18(n): for i in range(n): rowStart = chr(65 + n - 1 - i) for j in range(i + 1): print(chr(ord(rowStart) + j), end='') print()

[@NerdOverPhysics]

for pattern 18 it will always start from 'E'. Instead, we can code this way better : void pattern18(int n){ char ch = 'A'+n; for(int i=0;i

[@Dibyadipan]

*corrected* java code for pattern 18: public class pattern_18{ public static void main(String[] args) { int n=5; int counter=0; for(int i=0;i

[@SAGARROY-hs6lh]

alphaTriangle (Pattern18) answer in cpp: void alphaTriangle(int n) { char ch = 'A' + n - 1; for (int i = 0; i < n; i++) { for (char c = char(ch); c >= (ch - i); c--) { cout

[@riteshjat108]

Pattern 18 Java : for(int i =0; i

[@4444-c4s]

I think most of the people teach by starting from i=0, which makes calculations and visualization a bit complicated..take it i=1, it will make thinking very simpler. For eg: In pattern 7 & 8: void p7(int n){ for(int i=1;i

[@susmitha5g627]

Really happy to get it all for free! Thank you so much Striver!

[@amansinghrajput18]

Understood..Great way of teaching

[@yuuji-kun3061]

1:01:25 In Pattern18, we should not hardcode the value 'E', It should be dynamic. void pattern_18(int n) { for (int i=0; i

[@mx5enthusiast]

Exactly what I was thinking.

[@aayushjain3731]

Pattern 11 can also be written using a matrix like concept under the inner loop if((i+j)%2 == 0) cout

[@honourable8816]

here's my version of pattern 10, 11: void pattern10(short len){ if (len%2==0){ for (short i=1; i