Delve into the essence of Core Java, the cornerstone of robust software development. Master the fundamentals, object-oriented concepts, and essential features that pave the way for building powerful and scalable applications.
In mathematics Fibonacci Sequence is the series of numbers as given below 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, … The next number is found by adding up the two numbers before it: For Example : In above series 2 at index 4 is found by adding…
In mathematics, the greatest common divisor (gcd) of two or more integers, which are not all zero, is the largest positive integer that divides each of the integers. The greatest common divisor (also known as greatest common factor, highest common divisor or highest common factor) of a set of numbers…
A string prefix is a character(s) at the beginning of a string. For Example: in apple, app or ap or apps etc are prefix Problem Find the common longest prefix for strings apple, apps and appster Approach Sort all the string in alphabetical order. Find the small string Loop through…
Reversing an array, number, string and word is very important for interview point of view for all level of expertise. Beginner and Experienced both are asked this question again and again in interview. I will explain each one by one with working code and running it as screenshot. Problem 1…
A number that can divide by own or one only. For Example: 13, can be dived by only 1 and 13 only. Other prime numbers are 2, 3, 5, 7 , 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, … 947,…
We will draw half pyramids, inverted pyramids, full pyramids, inverted full pyramids, Pascal’s triangle, and Floyd’s triangle in Java Programming. Half Pyramid of * ** ** * ** * * ** * * * * Code Half Pyramid of Numbers 1 1 2 1 2 3 1 2 3 4…
As arraylist can contains duplicates element, so sometime there would be some requirement to remove the duplicate element from the list. For Example: { 10, 12, 23, 10, 2, 21, 78, 90, 12 } after removal it should like { 10, 12, 23, 2, 21, 78, 90 } We would…
Armstrong number is a number that is equal to the sum of cubes of its digits. For example 0, 1, 153, 370, 371 and 407 are the Armstrong numbers. let take an example of the armstrong number 153. Sum of the cube of each digit is equal to the same…
Find out each character in a word. For Example: In Programming each character count is p=1 a=1 r=2 g=2 i=1 m=2 n=1 o=1 Problem Write a java code that will print each character and their count. Code
A factorial of a positive integer n, denoted by n!, is the product of all positive integers less than or equal to n Let take an example of factorial of 5 Problem Write a java code for factorial. Code Run Code
An anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once. For example : For word CAT anagram are TAC, CTA, ACT, TCA etc. We are going to write a clean code for the anagram….
An integer is a palindrome when you read from the forward and read from the backward are same. or numeric palindrome, A number that remains the same when its digits are reversed. For Example: 121 is palindrome as from backward it also 121. 313 is number palindrome. 1001 is palindromic number. A String palindrome…