- Pattern questions

1. [Build Array from Permutation](https://leetcode.com/problems/build-array-from-permutation/)

2. [Concatenation of Array](https://leetcode.com/problems/concatenation-of-array/)

3. [Running Sum of 1d Array](https://leetcode.com/problems/running-sum-of-1d-array/)

4. [Richest Customer Wealth](https://leetcode.com/problems/richest-customer-wealth/)

5. [Shuffle the Array](https://leetcode.com/problems/shuffle-the-array/)

6. [Kids With the Greatest Number of Candies](https://leetcode.com/problems/kids-with-the-greatest-number-of-candies/)

7. [Number of Good Pairs](https://leetcode.com/problems/number-of-good-pairs/)

8. [How Many Numbers Are Smaller Than the Current Number](https://leetcode.com/problems/how-many-numbers-are-smaller-than-the-current-number/)

9. [Create Target Array in the Given Order](https://leetcode.com/problems/create-target-array-in-the-given-order/)

10. [Check if the Sentence Is Pangram](https://leetcode.com/problems/check-if-the-sentence-is-pangram/)

11. [Count Items Matching a Rule](https://leetcode.com/problems/count-items-matching-a-rule/)

12. [Find the Highest Altitude](https://leetcode.com/problems/find-the-highest-altitude/)

13. [Flipping an Image](https://leetcode.com/problems/flipping-an-image/)

14. [Cells with Odd Values in a Matrix](https://leetcode.com/problems/cells-with-odd-values-in-a-matrix/)

15. [Matrix Diagonal Sum](https://leetcode.com/problems/matrix-diagonal-sum/)

16. [Find Numbers with Even Number of Digits](https://leetcode.com/problems/find-numbers-with-even-number-of-digits/)

17. [Transpose Matrix](https://leetcode.com/problems/transpose-matrix/)

18. [Add to Array-Form of Integer](https://leetcode.com/problems/add-to-array-form-of-integer/)

19. [Maximum Population Year](https://leetcode.com/problems/maximum-population-year/)

20. [Determine Whether Matrix Can Be Obtained By Rotation](https://leetcode.com/problems/determine-whether-matrix-can-be-obtained-by-rotation/)

1. [Spiral Matrix](https://leetcode.com/problems/spiral-matrix/)

2. [Set Matrix Zeroes](https://leetcode.com/problems/set-matrix-zeroes/)

3. [Product of Array Except Self](https://leetcode.com/problems/product-of-array-except-self/)

4. [Find First and Last Position of Element in Sorted Array](https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/)

5. [Jump Game](https://leetcode.com/problems/jump-game/)

1. Area Of Circle Java Program

2. Area Of Triangle

3. Area Of Rectangle Program

4. Area Of Isosceles Triangle

5. Area Of Parallelogram

6. Area Of Rhombus

7. Area Of Equilateral Triangle

8. Perimeter Of Circle

9. Perimeter Of Equilateral Triangle

10. Perimeter Of Parallelogram

11. Perimeter Of Rectangle

12. Perimeter Of Square

13. Perimeter Of Rhombus

14. Volume Of Cone Java Program

15. Volume Of Prism

16. Volume Of Cylinder

17. Volume Of Sphere

18. Volume Of Pyramid

19. Curved Surface Area Of Cube

20. Total Surface Area Of Cylinder

21. Fibonacci Series In Java Programs

22. [Subtract the Product and Sum of Digits of an Integer](https://leetcode.com/problems/subtract-the-product-and-sum-of-digits-of-an-integer/)

1. Factorial Program In Java

2. Calculate Electricity Bill

3. Calculate Average Of N Numbers

4. Calculate Discount Of Product

5. Calculate Distance Between Two Points

6. Calculate Commission Percentage

7. Power In Java

8. Deprecation Program

9. Calculate Batting Average

10. Calculate CGPA Java Program

11. Compound Interest Java Program

12. Calculate Average Marks

13. Addition Of Two Numbers

14. Sum Of N Numbers

15. Armstrong Number In Java

16. Find Ncr & Npr

17. Reverse A String In Java

18. Find if a number is palindrome or not

19. Future Investment Value

20. HCF Of Two Numbers Program

21. LCM Of Two Numbers

22. Java Program Vowel Or Consonant

23. Perfect Number In Java

24. Check Leap Year Or Not

25. Sum Of A Digits Of Number

1. Write a program to print factorial of a number, also take input.

2. Write a program to print whether a number is even or odd, also take

input.

3. Take name as input and print a greeting message for that name.

4. Write a program to input principle, time and rate (P, T, R) from user and

find Simple Interest.

5. Take in two numbers and an operator (+, -, *, /) and calculate the value.

(Use if conditions)

6. Take 2 numbers as input and print the largest number.

7. Input a number and print all the factors of that number (use loops).

8. Input currency in rupee and output in dollar.

9. Take integer inputs till the user enters 0 and print the sum of all numbers

(HINT: while loop)

10. Take integer inputs till the user enters 0 and print the largest number from

all.

[Video Link](https://youtu.be/lhELGQAV4gg)

1. Input a year and find whether it is a leap year or not.

2. Take two numbers and print the sum of both.

3. Take a number as input and print the multiplication table for it.

4. Take a 2 numbers as inputs and find their HCF and LCM.

5. Keep taking numbers as inputs till the user enters ‘x’, after that print sum

of all.

1. Define two methods to print the maximum and the minimum number respectively among three numbers entered by user.

2. Define a program to find out whether a given number is even or odd.

3. A person is elligible to vote if his/her age is greater than or equal to 18. Define a method to find out if he/she is elligible to vote.

4. Write a program to print the sum of two numbers entered by user by defining your own method.

5. Define a method that returns the product of two numbers entered by user.

6. Write a program to print the circumference and area of a circle of radius entered by user by defining your own method.

7. Define a method to find out if number is prime or not.

8. Write a program which will ask the user to enter his/her marks (out of 100). Define a method that will display grades according to the marks entered as below:

Marks Grade

91-100 AA

81-90 AB

71-80 BB

61-70 BC

51-60 CD

41-50 DD

<=40 Fail

9. Write a program to print the factorial of a number by defining a method named 'Factorial'.

Factorial of any number n is represented by n! and is equal to 1*2*3*....*(n-1)*n. E.g.-

4! = 1*2*3*4 = 24

3! = 3*2*1 = 6

2! = 2*1 = 2

Also,

1! = 1

0! = 0

10. Write a function to find if a number if palindrome or not. Take number as parameter.

11. Convert the programs in [flow of program](flow-of-program.md), [conditionals & loops](conditionals-loops.md), [first java](first-java.md) assignemts into functions.