Data Structures and Algorithms

Arrays in Data Structure | Declaration, Initialization, Memory representation

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This document discusses the concept of factorials and how to find the number of trailing zeros in them. It explains how twos and fives as a pair in a number result in the number of trailing zeros, and provides the formula n/5 + n/25 + n/125 + ... to find the number of fives in a factorial. The document also explains how to stop the process of finding the number of fives by adding 1 to all the numbers on the blackboard. Overall, this document emphasizes the importance of understanding factorials ...

The document discusses the basics of arrays - a collection of data types stored in continuous memory locations. It highlights the need for arrays and the different types of arrays - fixed size and dynamic size - and their characteristics. The document also briefly touches upon how to use arrays. Examples are provided to illustrate the concepts discussed.

The document is a brief discussion about prime numbers and how to determine whether a given number is prime or not. It defines what prime numbers are, and provides a simple algorithm for testing whether a number is prime. The algorithm involves checking if the number is less than 2, equal to 2, or even. If it passes those tests, the algorithm then loops through all odd numbers less than or equal to the square root of the given number and checks for divisors. If the number is divisible by any of ...