My software development journey
Let us begin with the definition of a Prime number.A number which has only 1, and itself as factors is called a Prime number. The simplest problem that one can try is to check if a given number is a prime or not.If we find that the factors of the given number are just 1,…
Given a table schema of employees like the following. Employee id, employee name, and spouse id if their spouse is also working in the same company. spouse id will be null if only one person is working. Id Name Spouse id 100 Sachin 101 101 Anjali 100 102 Virat 103 103 Anushka 102 104 Sanju…
In programming, we often need to represent a list of integers in some range using a compact structure to reduce memory consumption. For example, if your program needs to find missing numbers from a huge file which can’t fit in memory, and all the numbers are in range of say [1, (2^64)-1] We need to…
Given an array, how do we sort the elements by descending order of their frequency? Also if two elements appear for same number of times, one which appeared first in the input array should be placed first. For example, if A = [7, 6, 1, 7, 1, 3, 6, 6, 2] The output should be…
If someone already have experience with languages like C/C++, Java, C# comparison between two variables of different types results in a compile error. But in Python this will simply evaluate to false. So beware when comparing a string and int containg same values. when we print, they look the same. I actually faced this issue…