Programming Articles - Page 2412 of 3363

In this article, we will learn about the solution and approach to solve the given problem statement.Problem statementGiven a string input, we need to create a python function to check whether it is a palindrome or not.A string is referred to be palindrome if the reverse of the string is identical with string.We can do this by two methods −Reversal by slicingComparison via negative indexingHere we will be learning reversal pf string bu the help of slicing.To reverse a string by th method of slicing specify the following statement −Str[ : : -1 ]Where the start and end parameters are ... Read More

In this article, we will learn about the solution and approach to solve the given problem statement.Problem statementGiven an array input Arr containing n integers. We need to check whether the input array is Monotonic in nature or not.An array is said to be monotonic in nature if it is either continuously increasing or continuously decreasing.Mathematically,An array A is continuously increasing if for all i

In this article, we will learn about the solution and approach to solve the given problem statement.Problem statementGiven a sring input, we need to find whether a string contains all unique characters or not.ApproachWe will create an array of boolean values, where the variable flag at the index i indicates that whether character i in the alphabet is contained in the string or not.The second time we encounter this character we can immediately return false as string characters is no longer unique.We can also return false if the string length exceeds the value of number of unique characters presnt in ... Read More

In this article, we will learn about the solution and approach to solve the given problem statement.Problem statementGiven an integer n , we need to check that the given integer is an armstrong number.A positive integer is called an Armstrong number of order n ifabcd... = a^n + b^n + c^n + d^n + …Here we will be discussing the brute-force approach for an armstrong number of 3 digits and hence of order three.To check the armstrong number of order n we need to replace 3 by the corresponding order value in line number 7.Now let’s see the implementation −Example Live ... Read More

In this article, we will learn about the solution and approach to solve the given problem statement.Problem statementGiven a positive integer N as input . We need to compute the value of 12 + 22 + 32 + ….. + N2.Problem statement:This can be solved by two methodsMultiplication addition arithmeticUsing mathematical formulaApproach 1: Multiplication & Addition ArithmeticHere we run a loop from 1 to n and for each i, 1

In this article, we will learn about the solution and approach to solve the given problem statement.Problem statementIntegers n and d are given. We need to find the smallest n-digit number divisible by d.Approach1. FirstNow let's we compute MIN : smallest n-digit number (1000...n-times)2. Now, If MIN % X is 0, ans = MIN3. else, ans = (MIN + X) - ((MIN + X) % X))This is because there will be a number in range [MIN...MIN+X] which is divisible by d.Now let’s see the implementation −Example Live Demodef answer(n, d):    # Computing MAX    Min = pow(10, d-1)    if(Min%n ... Read More

In this article, we will learn about the calculation of simple interest in Python 3.x. Or earlier.Simple interestis calculated by multiplying the daily interest rate by the principal amount by the number of days that elapse between the payments.Mathematically, Simple Interest = (P x T x R)/100Where, P is the principal amountT is the time andR is the rateFor Example, If P = 1000, R = 1, T = 2Then SI=20.0Now let’s see how we can implement a simple interest calculator in Python.Example Live DemoP = 1000 R = 1 T = 2 # simple interest SI = (P * R ... Read More

In this article, we will learn about the Selection sort and its implementation in Python 3.x. Or earlier.In selection sort algorithm, an array is sorted by recursively finding the minimum element from the unsorted part and inserting it at the beginning. Two subarrays are formed during the execution of Selection sort on a given array.The subarray , which is already sorted.The subarray , which is unsorted.During every iteration of selection sort, the minimum element from the unsorted subarray is popped and inserted into the sorted subarray.Let’s see the visual representation of the algorithm −Now let’s see the implementation of the ... Read More

Enabling version support means that the Gson library will be able to handle multiple versions of the same class. We use this when we have a class that has been modified and we want to be able to deserialize JSON data that was created using an older version of the class. Enabling Versioning Support in Java Gson Library The Gson library provides a simple versioning system for the Java objects that it reads and writes, and also provides an annotation named @Since for the versioning concept @Since(versionnumber). We can create a Gson instance with versioning using the GsonBuilder().setVersion() method. If ... Read More

Gson is a JSON for Java, which is developed by Google. We can format a date using the Gson library in Java. The Gson library provides a GsonBuilder class that allows us to create a Gson instance with custom settings. We call the create() method of the GsonBuilder class to create an instance of the Gson class. Then we use the method setDateFormat() to configure Gson to serialize Date objects according to the pattern provided. In order to use the Gson library, we need to add it to our project. If you are using Maven, add this to your ... Read More