9 Best Patterns Questions In Java (for Beginners) | Java Placement Course | Lecture 5

Time Stamps for Patterns
Solid Rectangle & Nested Loops - 00:35
Hollow Rectangle - 10:38
Half Pyramid - 18:23
Inverted half Pyramid - 23:47
Inverted & Rotated Half Pyramid - 26:50
Half Pyramid with Numbers - 33:45
Inverted Half Pyramid with Numbers - 38:21
Floyd's Triangle - 44:36
0-1 Triangle - 48:45

(It is not important to remember the names)

[sourikkarmakar]

Time Stamps for important points 🧑‍💻

Pattern 01 (Solid Rectangle) -> 0:50
Pattern 02(Hollow Rectangle) -> 10:38
Pattern 03(Half Pyramid) -> 18:23
Pattern 04(Inverted Half Pyramid) -> 23:47
Pattern 05(Inverted & rotated half pyramid) -> 26:50
Pattern 06(Half Pyramid with Num) -> 33:45
Pattern 07(Inverted half Pyramid with Num) -> 38:21
Pattern 08(Flyod's Triangle) -> 44:36
Pattern 09 -> 48:45

[darshanshah]

code for right angled triangle flipped by 180 degrees:
for(int i=1;i<=4;i++){
for(int j=1;j<=4;j++){
if(j<=4-i)
System.out.print(" ");
else System.out.print("*");
}
System.out.println();
}

[mansishinde]

7th Question) Code for alternate half pyramid w/ numbers can also be:
int n=5;
for(int i=5;i>=1;i--){
for(int j=1;j<=i;j++){
System.out.print(j+" ");
}System.out.println();
}

[_ashutoshdas]

The 9th question can be done in another approach/way:-

int k=1;
for(int i=0;i<m;i++){
for(int j=0;j<m;j++)
{if(j<=i)
System.out.print(k+ " ");
if(k==1)
k=0;
else
k=1;
}
System.out.println();
}

[rajanpoudel]

for inverted and rotated half pyramid (using 2 for loops instead of 3 )
int m = 4;
int n = 4;
for (int i = 1; i < m + 1; i++) {
for (int j = 1; j < n + 1; j++) {
if (i + j > n) {
System.out.print("*");
} else {
System.out.print(" ");
}
}
System.out.println();
}

[sreyabhowmick]

I'm still shocked these videos are free. Thank you bhaiya and didi, you guys have all my respect and love❤

[rishabhgupta]

Effort being put while explaining any part is commendable!

[Ankii]

Row is Horizontal allignment
Columns is Vertical Allignment

[itsnewday]

This lecture really helped me a lot, I solved 50+ questions of JAVA patterns after seeing it. Thanks for such interesting lectures

[soujanyakalita]

The effort you are putting is something that i cannot explain how good it is, also i want to thank you cause now i think i will be able to learn programming. Please make this series a complete series for java beginner to end.

[shaikhaliya]

The way she explain is what I expect from my college teachers but they don't ....thank u shoo much for giving so much perfectionist in your lecture

[avaneeshshetye]

You explain really well! The way how you show what is actually happening in the code makes it easy to understand. Thanks!

[Calculasian]

pattern 1:
(other method)

public class Patterns {
public static void main(String[] args) {

int row = 6;
int column = 9;

for(int i = 1; i<=row; i++) {
String result = "*".repeat(column);
System.out.println(result);
}
}

}

[subhammishra]

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Ek bar bhi na pausa karna padta h... Na hi back karna padhta Sidha dimag m ghusta jata h... Too good... 1000likes for this video..
We friends are eagerly waiting for your video... So please dont stop this series

[surajkumarsingh]

the fourth question is also be solved as (inverted half pyramid )
for(int i=1;i<=m;i++){
for(int j=m;j>=i;j--){
System.out.print("* ");
}
System.out.println();
}
you will get the same output by using another logic.

[_ashutoshdas]

The 6th, 7th and 8th questions can be done in another approach/way:-

For q6)
for(int i=0;i<m;i++){
for(int j=0;j<m;j++)
{if(j<=i)
System.out.print( j+1 + " " ); }
System.out.println();
}

for q7)
for(int i=0;i<m;i++){
for(int j=0;j<m;j++)
{if(j<=(m-i-1))
System.out.print(j+1+" ");
else
System.out.print(" ");
}
System.out.println();
}

}
}

for q8)
int k=0;
for(int i=0;i<m;i++){
for(int j=0;j<m;j++)
{if(j<=i)
{
System.out.print(k+1 +" ");
k++;
}
// else
// System.out.print(" ");
}
System.out.println();
}

}
}

[jaycreation]

Didi aap bahut accha smjhati hai,
Hamare school wale sir se bhi accha smjhati hai
thank you
🙂🙂🙂

[Rieshu-sm]

for prime, i think condition i*i<n would consume less time.

[ujwalsadharia]

Note for viewers : if anyone is using an older version of JDK then you will face problems, just now I faced a problem with pattern no 5 (Inverted & Rotated Half Pyramid) I was using JDK-8u28 and it was not showing actual output. Later i updated to JDK's latest version and the problem was solved.

Note -The code was perfect, I have even used a java visualizer for confirmation.

[hppavilionlap]

42:37 For this Pattern you can also write it in the following way-
for(int i=4;i>=0;i- -){
for(int j=1;j<=i;j++){
System.out.print(j);
}
System.out.println();
}