Java Recipes



isNumber simply checks if a string has digits in it. If it does not, it returns false; otherwise, it returns true.

Check if input is number or not.



The code removes all instances of the character '\' from the string str.

Remove punctuation from string


The function allCharactersSame() checks if the strings s and s are the same by comparing their characters.

To check if all characters are same


round() calculates the remainder of a number divided by 10, and then adds 10 to that number to create the new round number.

Round the number to nearest ten


In the round() function, a is the integer that represents the number being rounded off to. The expression a + 10 will round the number off to the nearest integer, which in this case is 11. So, the return statement will return 11, as opposed to the original 10.



The swap function exchanges the values of two variables, an int and an int.

Swap numbers



This code creates an array arr of size n, initializes its elements to 0, and then rotates the array right around its current position by d positions. It then adds the values of the elements in the rotated array to the values of the elements in the original array arr, starting at the original position.

Right Rotate Array



This code is retrieving the COFACTOR for an array of N points. The COFACTOR is a number that tells you how much of each element is contributed by each row and column.

Find co-factor in matrix



This code is used to check if a given password is valid. The code first creates a regular expression that specifies what characters are allowed in a password and what characters are not allowed. The code then uses the Pattern class to create a pattern that will be used to match the given password. The password is then compared against the pattern, and if the comparison succeeds, the return value is set to true. If the comparison fails, the return value is set to false.

Password Validation



This code prints the integers in the array, starting at 0 and going up to the length of the array.

Print Array

Left Rotate Array



This code is a loop that rotates the array by one spot to the left. The temp variable stores the current position of the array after the loop.

Left Rotate Array by one



This code reverses an array of integers. It starts at the end of the array and works its way to the beginning. Every element in the array is swapped with the next element in the array, starting at the position of the first element in the array.

Reverse Array



The code calculates the sum of all the elements in an array. The loop iterates over the array, summing up each value. The return value is the sum of all the elements in the array.

Sum of elements of array


The code iterates through the rows and columns of the matrix, printing each element on a separate line. After printing each element, the code prints a space and ends the loop.

Print Matrix



In the code above, the array C is created by adding the elements of A and B together. C is an array of size arrays, each of which has the same number of elements as the other.

Matrix Addition



The multiplyMatrix() function multiplies two matrices row by row. The first matrix is A and the second matrix is B. The code first checks to see if row2 is not equal to col1. If it is not, the code return and the function will not execute. row1 and col1 are the number of rows and columns in the two matrices. Next, the code creates a new matrix C with the same number of rows and columns as row1 and col2. The code then loops through each row of A and multiplies each element in C for each row of A. It does the same for B. The end result is that the element in C for each row of A and B is the product of the elements in A and B for that row.

Multiply matrices



The code above calculates the power of a number x by multiplying it by itself the number of times equal to y-1.

Power of a number



The discriminant function returns the magnitude of the difference between two integers a and b, where a is the smaller integer and b is the larger integer.

Discriminant of quadratic equation



The code calculates the factorial of an input using the return statement.

Factorial of a number



This code calculates the simple interest.

Simple Interest



The function returns the area of the right triangle with base b and height h.

Area of right triangle



The function calculates the area of a right triangle.

Area of circle



This code calculates the perimeter of a given triangle.

Perimeter of triangle



This code calculates the area of a square using the mathematical formula: 
area = a*a

Area of square



The following code calculates the perimeter of a rectangular shape.

Perimeter of square



The code returns the perimeter of a rectangle that has its top-left corner at location a and its bottom-right corner at location b.

Perimeter of rectangle



In the above code, the function returns the area enclosed by the rectangle that has its origin at the coordinates (a, b) and has the length equal to the given value.

Area of rectangle



The circumference function takes an int input and calculates the circumference of the given circle. The first line calculates the circumference of a circle with a radius of 22. The second line calculates the circumference of a circle with a radius of r. The third line returns the circumference.

Circumference of circle

Cpp recipes


The circumference of a circle with radius r.


The code calculates the perimeter of a triangle using the given three points. 


The code calculates the area of a sqaure.

Area of square'


The code declares and returns an integer that represents the perimeter of a square whose sides are defined by the value of the parameter a.


This code creates an imaginary rectangle that has the length of twice the distance between its two given coordinates, plus one unit.



The areaRectangle function calculates the area of a rectangle using the given x and y coordinates.



This code calculates the area of a circle whose radius is 22.5.



The code in this question calculates the simple interest on an amount of money. The amount of money, P, is multiplied by the interest rate, R, and the time, T, is used to calculate the simple interest. The resulting value is then divided by 100 to get the simple interest.



The function factorial takes an unsigned integer as a parameter and return the value of factorial multiplied by the value of its parameter - 1.



The code is checking the length of password against a set of conditions. The first check is to see if the password is in lowercase or uppercase. If it is, then the second check is made to see if the password has any digits. If it does, then the code prints out the strength of the password.



In the discriminant() function, the first two arguments are the integers a and b. The second two arguments are the integers c and d. The function calculates the integer d that is equal to the difference between the integers b*b and 4*a*c.


The code finds the roots of a quadratic equation by using the Pythagorean theorem. The code checks to see if the a and b values are equal. If they are not equal, the code calculates the square root of the difference between the a and b values. If the value of the square root is not negative, the code prints the values of the a, b, and c variables. If the value of the square root is negative, the program prints the value "-b + sqrt_val" and "-b - sqrt_val" where "b" is the original b value and "sqrt_val" is the square root of the difference between the original b value and the square root of the a value.

Find roots of quadratic equation



The code calculates the power of a function by multiplying the input by the function's output.

power of a number



The code merges two sorted arrays, arr1 and arr2. The arrays have the same size, n1 and n2. The code starts by sorting arr1 using the natural ordering (the default compared to the compressing order). It then iterates through arr2 and attaches the values from arr1 to the appropriate locations in arr3.

Merge two sorted arrays



This code rotates the array left by one position.



The code reverses the contents of an array arr starting at start and ending at end.



This code is used to find the cofactor of an equation. It takes in an equation with n rows and n columns and calculates the cofactor for each row and column.



The add() function takes two arrays as its arguments. The first array, A, is of length N and the second array, B, is of length N. The function will sum the elements in A and B and store the result in C.

Matrix multiplication



The code calculates the sum of all the elements in an array and stores the result in sum. It loops through the array and increments sum for each element, then returns the sum.

Merge Sort

Heap Sort

Sorts the array using selection sort algorithm.

Selection Sort

Quick Sort



The code in the void swap function will swap the contents of variables a and b.



The bubbleSort function sorts an array of ints by swapping the element at position index i with the element at position index j.

Bubble Sort


The code prints the values of the array using the default console output device.



The binarySearch function is used to search for an element in an array. It compares the value of the searched element with the element at the given location. If the values are the same, the function returns mid - 1, as this is the location of the first comparison. If the values are not the same, the binarySearch function compares the value of the searched element with the value at mid+1, and returns that value if they are the same, or returns -1 if they are not the same.

Name	Created	Popularity
Check if input is number or not.	4/16/2022	0
Remove punctuation from string	4/16/2022	0
To check if all characters are same	4/16/2022	0
Round the number to nearest ten	4/16/2022	0
Round the number to nearest ten	4/16/2022	0
Swap numbers	4/16/2022	0
Right Rotate Array	4/16/2022	0
Find co-factor in matrix	4/16/2022	0
Password Validation	4/16/2022	0
Print Array	4/16/2022	0
Left Rotate Array	4/16/2022	0
Left Rotate Array by one	4/16/2022	0
Reverse Array	4/16/2022	0
Sum of elements of array	4/16/2022	0
Print Matrix	4/16/2022	0
Matrix Addition	4/16/2022	0
Multiply matrices	4/16/2022	0
Power of a number	4/16/2022	0
Discriminant of quadratic equation	4/16/2022	0
Factorial of a number	4/16/2022	0
Simple Interest	4/16/2022	0
Area of right triangle	4/16/2022	0
Area of right triangle	4/16/2022	0
Area of circle	4/16/2022	0
Perimeter of triangle	4/16/2022	0
Area of square	4/16/2022	0
Perimeter of square	4/16/2022	0
Perimeter of rectangle	4/16/2022	0
Area of rectangle	4/16/2022	0
Circumference of circle	4/16/2022	0
Circumference of circle	4/16/2022	0
Perimeter of triangle	4/16/2022	0
Area of square'	4/16/2022	0
Perimeter of square	4/16/2022	0
Perimeter of rectangle	4/16/2022	0
Area of rectangle	4/16/2022	0
Area of circle	4/16/2022	0
Simple Interest	4/16/2022	0
Factorial of a number	4/16/2022	0
Password Validation	4/16/2022	0
Discriminant of quadratic equation	4/16/2022	0
Find roots of quadratic equation	4/16/2022	0
power of a number	4/16/2022	0
Merge two sorted arrays	4/16/2022	0
Left Rotate Array	4/16/2022	0
Left Rotate Array by one	4/16/2022	0
Reverse Array	4/16/2022	0
Find co-factor in matrix	4/16/2022	0
Matrix Addition	4/16/2022	0
Matrix multiplication	4/16/2022	0
Sum of elements of array	4/16/2022	1
Merge Sort	4/16/2022	0
Heap Sort	4/16/2022	0
Selection Sort	4/16/2022	0
Quick Sort	4/16/2022	0
Swap numbers	4/16/2022	0
Bubble Sort	4/16/2022	0
Print Array	4/16/2022	0
BInary Search	4/16/2022	0
Linear Search	4/16/2022	0

shagunbansal30

Cpp

Coding Assistant