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Articles by Mr. Satyabrata
Page 12 of 32
How to Check if the Matrix is Diagonal Matrix in Java?
In Java, Array is an object. It is a non-primitive data type which stores values of similar data type. The matrix in java is nothing but a multi-dimensional array which represents multiple rows and columns. A matrix having non-zero elements only in the main diagonal (running from the upper left to the lower right) is called as diagonal matrix. As per the problem statement we have to a matrix and we have to check whether that given matrix is a diagonal matrix or not. Let’s deep dive into this article, to know how it can be done by using Java ...
Read MoreForm Equation of Circle from Given Radius and Centre in Java
A circle is a closed shape formed by tracing a point that moves in a plane such that its distance from a given point is constant. In this article we will check how to form the equation of circle from given radius and centre. We will be given a circle with centre i.e (x1, y1) and radius r. We need to form the equation of circle from given radius and centre. The equation of the circle is given by formula − $$\mathrm{(x-x1)^2\:+\:(y-y1)^2\:=\:r^2}$$ Now after expanding and arranging the equation we get − $$\mathrm{(x)^2\:–\:(2*x1*x)\:+\:(y)^2\:-\:(2*y1*y)\:=\:(r)^2\:-\:(x1)^2\:-\:(y1)^2}$$ Let’s start! To show you ...
Read MoreHow to find total area when two rectangles overlap each other in Java?
A Rectangle is a four sided-polygon, with opposite side equal and having all the internal angles equal to 90 degrees. In this article we will check how to find total area when two rectangles overlap each other. We will be given with two rectangle having length and breadth. Also we will we given with intersecting length and width of the two rectangles as shown in the figure − To find the total area of a rectangle we basically add areas of two rectangles. This includes the intersecting part twice, so we subtract the area of intersecting part. Total ...
Read MoreFind Column Which is Having Maximum 0’s in a Binary Matrix in Java
In Java, Array is an object. It is a non-primitive data type which stores values of similar data type. The matrix in java is nothing but a multi-dimensional array which represents multiple rows and columns. A binary matrix is a matrix of 0s and 1s, where each element can only be one of two possible values. Here we have given a binary matrix which contains set of binary elements and as per the problem statement we have to find the column which is having maximum number of 0’s. Let’s start! To show you some instances Instance-1 Given binary matrix =1 ...
Read MoreFind Product of Sum of First & last Row Elements of a Matrix in Java
Matrices are nothing but it’s more than a collection of data elements arranged in a rectangular layout that is two-dimensional. In Java, an array with two dimensions can be considered as a matrix. As per the problem statement the task is to find the product of sum of all elements in first row and last row. Let’s deep dive into this article, to know how it can be done by using Java programming language. To show you some instances Instance-1 Suppose the original matrix is{{15, 5, 9}, {4, 14, 16}, {7, 8, 19}}; After finding product of sum ...
Read MoreFind Number of Odd and Even Elements in Each Row of a Matrix in Java
In Java, Array is an object. It is a non-primitive data type which stores values of similar data type. The matrix in java is nothing but a multi-dimensional array which represents multiple rows and columns. Here we have given a matrix which contains set of elements and as per the problem statement we have to find out the number of odd elements and even elements in each row of a matrix. Let’s start! To show you some instances Instance-1Given matrix = 21 22 23 24 25 26 27 28 29 Row 1 has 2 odd elements and 1 even element Row 2 has ...
Read MoreHow to convert Wrapper Objects to Primitive Types in Java?
In Java, A primitive type (i.e., int, double, float, etc.) is a basic data type that is built into the language and is not an object. Primitive types have a fixed size and can be used directly in calculations and operations. A wrapper object is nothing but an object representation of a primitive type. For example, the Integer class is a wrapper object for the int primitive type. Wrapper objects are instances of classes and have methods that can be called, while primitive types do not. However, using wrapper objects requires more memory than using primitive types, ...
Read MoreHow to Convert String to Object in Java?
In Java, Object is a parent class of all the classes. So, we can directly assign a string to an object as each class is internally a child class of the Object class. A string is generally considered a data type and is often implemented as an array data structure of bytes (or words) that stores a sequence of elements, typically characters, using some character encoding. The object data type is also known as non-primitive or reference data type; these are not predefined ones; instead, we need to create them. Let’s deep dive into this article, to know how it ...
Read MoreHow to Convert Date to Timestamp in Java?
In Java, Date can be converted Timestamp by using Timestamp class. Timestamp class is present in sql package. Date only store date value whereas timestamp stores both date and time value. The TIMESTAMP data type is used for values that contain both date and time parts. TIMESTAMP has a range of '1970-01-01 00:00:01' UTC to '2038-01-19 03:14:07' UTC. Let’s deep dive into this article, to know how it can be done by using Java programming language. To show you some instances Instance-1 Suppose the input date is written on 05/01/2023. Then corresponding Timestamp is “2023-01-05 20:37:54.832”. Instance-2 ...
Read MoreFind product of Each Row and Column in Java
In Java, Array is an object. It is a non-primitive data type which stores values of similar data type. The matrix in java is nothing but a multi-dimensional array which represents multiple rows and columns. Here we have given a matrix which contains set of elements and as per the problem statement we have to find the product of each row elements and columns elements. In this article we will see, how it can be done by using Java programming language. To show you some instances Instance-1 Given matrix =21 22 23 24 25 26 27 28 29 Product of each row − ...
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