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Programming Articles
Page 1842 of 2547
Golang Program Level Order Traversal of Binary Tree
In programming, there are different data structures to store data. There are two different types of data structures linear and non −linear. Array, stack, queue, and linked list are linear data structures. Binary trees, trie, etc are non − linear data structures. In this article, we are going to explore level order traversal on one of the non − linear data structures i.e. binary tree. Level Order Traversal In level order traversal, of a binary tree we start from the root node and then traverse the children nodes and move to the children of children nodes. In this way, ...
Read MoreGolang Program Left View of Binary Tree
In programming, there is a coding problem of binary tree that gets asked very frequently in interviews and the problem statement is to find the left view of a binary tree. If we try to understand the problem statement more than what exactly the left view is then we can explain it in a way that all the nodes are visible when you see them by standing on the left side of the tree. Illustration Let us understand more with the help of an example. Suppose we have a below tree and if we stand on the left side ...
Read MoreGolang program Breadth-First Search graph
Graph is a data structure that consists of edges or we can say nodes and vertices. Vertices are the lines between the nodes. To traverse all these nodes we have different traversal algorithms. In this article, we will discuss, Breadth − first search or we can say BFS. In Breadth − first search, we first start from one node and move to another till the dead end comes. Example If we start from node 1 then it will first visit node 2 and node 4 first. Then from node 2, we will visit node 3. In this way, the ...
Read MoreHow to Return a String from the Function in Golang?
In programming, to make the code more modular, usable, and readable we break the code into different small blocks and these blocks are known as functions. A string is a data structure consisting of a set of alphabets. In solving any programming problem we want that the function should return some set of alphabets then we create a string in the function that the function returns in the end. This tutorial will explain this concept with the help of two examples. In the first example, we will define two strings and create a function that will return the string ...
Read MoreHow to pass a string to the function in Golang?
In this tutorial, we are going to learn about how to pass a string in function as an argument in Golang. In programming, to make the code more modular, usable, and readable we break the code into different small blocks and these blocks are known as functions. If you have created a string of alphabets and you want to perform some operations on the string then you need to pass that string to the function by passing it as an argument. This tutorial will explain this concept with the help of two examples. In the first example, we will ...
Read MoreHow to Find Whether the given Number is PRIME or not using Recursion in Golang?
In mathematics, there are numbers that can be divisible by 1 or by itself, and such numbers are called Prime numbers. For example, 2, 3, 5, 7 … etc. In programming, we can create a program to check number is prime or not. In this article, we will use the concept of recursion which we call the function within the function to create a program to check number is prime or not. Example 1 In this example, we are going to create a recursive function with two parameters one is the number and another one is the divisor. The ...
Read MoreHow to find the Tangent of a given Radian Value in Golang?
The ratio of the radian’s adjacent side and the opposite side is known as the tangent of the given radian. Golang language has many packages with predefined functions that the developer can use without writing the complete logic. To perform the mathematical operations and logic we have a math package in Golang. We will use this package only to find the Tangent of a given radian value. We will also see how to import the package and also how to call a function this package consists of by writing a Golang code. Tangent Definition Tangent is a function that ...
Read MoreHow to Check Whether a Number is Even or Odd in Golang?
In this tutorial, we are going to learn how we can check whether the number is even or odd. The number that can be divisible by 2 is an even number and the number that is not divisible by two is an odd number. This tutorial includes three different ways to achieve this Moulous Operator − In the first method, we are using the modulus (%) operator. This operator is used to find the remainder of two numbers. In our case, we will do the modulus of the number with 2 and if it returns 0 then ...
Read MoreHow Does One Install Pip in a Docker Container using a Dockerfile?
In this tutorial, we are going to learn how we can install pip in a Docker container using a Dockerfile. This tutorial will cover the creation of the Dockerfile and then we will see the docker command to build a docker image from the Dockerfile, and in last we will see the docker command to run a container based on that image and see whether PIP is installed properly or not. Prerequisites There are some prerequisites to creating and building the Dockerfile as mentioned below. The stable version of Docker should be installed. Create a file in any folder ...
Read MoreGolang Program to Sort an Array of 0’s, 1’s and 2’s
In Golang, like other programming languages, we can code the logic to sort an array that has 0’s, 1’s, and 2’s as elements. Sorting means assigning the data either in increasing order or in decreasing order. This is one of the famous questions on the array asked in interviews. There can be two approaches to achieve this that we are going to explore one by one. For example, we have an array 2, 1, 0, 0, 1, 2, and after sorting the array will look like 0, 0, 1, 1, 2, 2. Method 1 In this example, we are going ...
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