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Articles by Pavitra
Page 7 of 13
Python program to check if a string contains all unique characters
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 MorePython Program for Find the perimeter of a cylinder
In this article, we will learn about the solution to the problem statement given below −Problem statement − Input diameter and height, find the perimeter of a cylinderPerimeter is nothing but the side view of a cylinder i.e. a rectangleTherefore Perimeter= 2 * ( h + d )here d is the diameter of the cylinderh is the height of the cylinderNow let’s see the implementationExample# Function to calculate the perimeter of a cylinder def perimeter( diameter, height ) : return 2 * ( diameter + height ) # main diameter = 5 ; height = 10 ; print ("Perimeter ...
Read MorePython Program to check if the given array is Monotonic
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
Read MorePython program to check if the given string is pangram
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 generate a Python program to check whether that string is Pangram or not.A pangram is a sentence/ series of words which contains every letter in the English Alphabets collection.Now let’s see how we can solve the problemWe will use a loop that checks whether each character present in the input string belongs to the alphabet set or not which we will declare manually .The implementation of the approach above is given by −Exampleimport string def ispangram(str): ...
Read MorePython Program to check whether it is possible to make a divisible by 3 number using all digits in an array
In this article, we will learn about the solution and approach to solve the given problem statement.Problem statementGiven an array input of integers, we need to find whether it’s possible to make an integer using all the digits available in these numbers such that it would be divisible by 3.Here we will generate a function that will take two arguments namely the array of integers and the length of the array.The implementation given below works on the concept from the mental mathematics. Here we observe that a number is divisible by 3 if the sum of the digits are divisible ...
Read MorePython Program for the focal length of a spherical mirror
In this article, we will learn about the solution to the problem statement given below −Problem statementWe will be given the radius of curvature of the spherical mirror and we have to find the focal length of the same.The focal length is the distance between the centre of curvature of the mirror to the principal foci. In order to determine the focal length of a spherical mirror firstly, we should know the radius of curvature of that mirror. The distance from the vertex of the mirror to the centre of curvature is called the radius of curvature.Mathematically −For concave mirror: ...
Read MorePython Program for GCD of more than two (or array) numbers
In this article, we will learn about the solution to the problem statement given below −Problem statement − We will be given an array of number and we need to find the greatest common divisor.If we need to find gcd of more than two numbers, gcd is equal to the product of the prime factors common to all the numbers provided as arguments. It can also be calculated by repeatedly taking the GCDs of pairs of numbers of arguments.Here we will be implementing the latter approachSo now, let’s see the implementationExampledef findgcd(x, y): while(y): x, y ...
Read MorePython Program for How to check if a given number is a Fibonacci number?
In this article, we will learn about the solution to the problem statement given below −Problem statementGiven a number n, check whether n is a Fibonacci number or notWe all are aware that the nth Fibonacci number is the sum of the previous two Fibonacci numbers. But they also offer an interesting relation other than the recurrence relation.A number is Fibonacci in nature if and only if (5*n2 + 4) or (5*n2 – 4) is a perfect square.We will use this property to check whether a number is Fibonacci or not.Now let’s see the implementation of the Python script −Exampleimport ...
Read MorePython Program for n-th Fibonacci number
In this article, we will compute the nth Fibonacci number.A Fibonacci number is defined by the recurrence relation given below −Fn = Fn-1 + Fn-2With F0= 0 and F1 = 1.First, few Fibonacci numbers are0,1,1,2,3,5,8,13,..................We can compute the Fibonacci numbers using the method of recursion and dynamic programming.Now let’s see the implementation in the form of Python scriptApproach 1: Recursion MethodExample#recursive approach def Fibonacci(n): if n
Read MorePython Program for Print Number series without using any loop
In this article, we will learn about the solution to the problem statement given below −Problem statement − Given Two number N and K, our problem is to subtract a number K from N until number(N) is greater than zero(0), once the N becomes negative or zero then we start adding K to it until that number become the original number(N).For example, N = 10 K = 4 Output will be: 10 6 2 -2 2 6 10Algorithm1. we call the function again and again until N is greater than zero (in every function call we subtract K ...
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