Lecture 4: Solving Pattern Questions (Part-2)

In this Video, we are going to solve a lot of Pattern questions.

There is a lot to learn, Keep in mind “ Mnn boot karega k chor yrr apne se nahi yoga ya maza nahi para, Just ask 1 question “ Why I started ? “

Homework: Added in Video already
Homework Timestamps [13:20, 17:09, 27:58, 29:28, 33:30, 37:25, 41:40, 51:30, 52:35, 53:35, 53:45, 54:10, 01:00:43]

Telegram Group Link: Love Babbar CODE HELP

Do provide you feedback in the comments, we are going to make it best collectively.

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Intro Sequence: We have bought all the required Licenses of the Audio, Video & Animation used.

#DSABusted

[divyanshuvig]

Pattern's Timestamps:-

Pattern 3 : 0:25
Pattern 4 : 2:36
Pattern 5 : 5:09
Pattern 6 : 7:48
Pattern 7 : 10:19
Pattern 8 : 13:06
Pattern 9 : 13:43
Pattern 10 : 17:57
Pattern 11 : 22:43
Pattern 12 : 22:47
Pattern 13 : 28:57
Pattern 14 : 29:55
Pattern 15 : 33:48
Pattern 16 : 37:52
Pattern 17 : 38:44
Pattern 18 : 41:55
Pattern 19 : 47:31
Pattern 20 : 51:42
Pattern 21 : 52:56
Pattern 22 : 53:49
Pattern 23 : 54:01
Pattern 24 : 54:13
Pattern 25 : 54:28
Pattern 26 : 54:51
Pattern 27 : 1:01:09

[vent_down_]

Pattern Problem 17:50
Code N Explanation

=> Code :-

int n;
cin>>n;

int i=1;
while(i<=n){
int j = i;
while(j<2*i){
cout<<j<<" ";
j =j+1;
}
cout<<endl;
i =i+1;
}


=> Explanation :
Observe the pattern carefully
1
2 3
3 4 5
4 5 6 7

we set the condition while (j<2*i) in 2nd while loop cuz in above pattern
every row starts with the the row number(value of i) N ends before the twice of its row value..

1 (row number, i = 1 So, j<2*1, i.e 2)
2 3 Similarly, 2*2 =4 & lastValue : 3
3 4 5
4 5 6 7

[ardent]

I found it very challenging at first..I'll practice them as much as i can for getting a grip and keep revising these important and brainstorming questions.Thankyou babbar bhaiya, you are helping us children a lot with your videos.

[sakshamaggarwal]

for 36:00 this seems a better approach

int n;
cin >> n;

int i=1;
char ch = 'A';

while(i<=n){
int j=1;
while(j<=i){
cout << ch ;
j=j+1;
}
ch++;
cout << endl;
i++;
}

[Gaurav-imdf]

17:44 formula
Cout << row + column -1 ;
Row from 1 to n
Column from 1 to row

[tanzeelahmed]

Programming is not so difficult but with the right explanation. It turns out programming is just fun learning it from you.

[qvvedck]

21:47 You dont need to put +1 in (i-j+1) if you initialise j with 0 and put j<i in inner while loop, it will make people understand more easily.

[Atharvsp]

sach mai bhai bohot madat ho rahi hai solution dekhane se pehele jab question try kar ke sahi ho raha hai tab alag hi khushi ho rahi hai

[engineerbae]

Pattern's Timestamps:-

Pattern 3 : 0:25
Pattern 4 : 2:36
Pattern 5 : 5:09
Pattern 6 : 7:48
Pattern 7 : 10:19
Pattern 8 : 13:06
Pattern 9 : 13:43
Pattern 10 : 17:57
Pattern 11 : 22:43
Pattern 12 : 22:47
Pattern 13 : 28:57
Pattern 14 : 29:55
Pattern 15 : 33:48
Pattern 16 : 37:52
Pattern 17 : 38:44
Pattern 18 : 41:55
Pattern 14's Easy Approach : 47:02
Pattern 19 : 47:31
Pattern 20 : 51:42
Pattern 21 : 52:56
Pattern 22 : 53:49
Pattern 23 : 54:01
Pattern 24 : 54:13
Pattern 25 : 54:28
Pattern 26 : 54:51
Pattern 27 : 1:01:09 ( Dabangg Pattern )

[shwetagupta]

Done with this lecture..😍
Solved all the questions and ab toh alag hi level confidence aara hai patterns me🙃
Thank you for making it happen Bhaiya..🤗

[sujalsharma]

This is how completed the DABANGG pattern question (breaking it into 4 parts for a better understanding). Thanks a lot Babbar Sir for making the playlist of this course❤


#include<iostream>
using namespace std;
int main(){
int n, i=1;
cin>>n;


//first triangle

while(i<=n){
int j=1;
while(j<=n-i+1){
cout<<j;
j=j+1;

}


//second triangle(half of stars ke liye)

int star1=i-1;
while(star1){
cout<<"*";
star1=star1-1;
}


//third triangle(rest of stars ke liye)

int star2=i-1;
while(star2){
cout<<"*";
star2=star2-1;
}


// last triangle

int start=j-1;
while(start){
cout<<start;
start=start-1;
}

cout<<endl;
i=i+1;
}

}

[Oliver_johnsonns]

Anyone's there who's doing it rn?

[deepakbehera]

52:50. Formula
Int star=n-row+1;
While(col<=star){
Cout<<"*";
Col=col+1;

[akanshaagrawal]

These questions remembering me my College days... When we used to do that patterns... I wanted to start my coding and DSA skills again... and these videos came out... Thankyou for making these kind of series... Now I am enjoying programming again... And doing all the problems into JavaScript...😊

[mauryadharmendra]

Your explanation is so good. Actually, I know only python but now the way you explain I am doing it in both the languages properly. Thanks for providing us this awesome DSA course. We all are always support you, Our Elder Brother. ❤❤

[InspirationalStories-brsj]

22:50 in this timestamp the better code for pattern.( Using 'ASCII TABLE')

cout<<"Enter no. ";
int n;
cin>>n;

int a=1;
char val=65;
while (a<=n){
int b=1;
while (b<=n){
cout<<val<<' ';
b++;
}
cout<<endl;
a++;
val++;
}

[amankharwal]

Your explaination is amazing, I hope this video reaches every student.

[amansinghal]

Never felt this much confident while doing pattern problems. Thankyou so much bhaiya.

[kabir]

aapki wajah se mujhe apni khoyi hui sakti yaad aane lagi hai + god

[muzamilahmed]

32:27
You can also use
int i = 1;
int j = 1;
char k = 'A';
while(i<=n){
while(j<=n){
cout << k << " ";
k++; // incrementing k and resetting it to 'A' + row number later
j++;
}
cout << "\n";
k = 'A' + i;
j=1;
i++;
}