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Train a Decision Tree based on provided dataset.
Preprocess the dataset by handling missing values and encoding categorical variables.
Split the dataset into training and testing sets.
Train the Decision Tree model on the training set.
Evaluate the model's performance on the testing set using metrics like accuracy or F1 score.
Feature selection can be done using techniques like filter methods, wrapper methods, and embedded methods.
Filter methods involve selecting features based on statistical measures like correlation, chi-squared test, etc.
Wrapper methods use a specific machine learning algorithm to evaluate the importance of features through iterative selection.
Embedded methods incorporate feature selection within the model training proces...
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I applied via Naukri.com and was interviewed in Aug 2020. There were 3 interview rounds.
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Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements and swaps them if they are in the wrong order.
Start from the first element and compare it with the next element
If the next element is smaller, swap them
Repeat this process for all elements in the array
Continue this process until no more swaps are needed
A program to print all prime numbers
Take input from user for range of numbers
Loop through the range and check if each number is prime
Print the prime numbers
Hashmap is a data structure that stores key-value pairs and allows constant time access to values based on their keys.
Hashmap uses a hash function to map keys to indices in an array.
Collisions can occur when multiple keys map to the same index, which can be resolved using techniques like chaining or open addressing.
Examples of hashmap implementations include Java's HashMap class and Python's dict type.
Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.
Inheritance allows code reuse and promotes code organization.
The existing class is called the parent or superclass, and the new class is called the child or subclass.
The child class inherits all the properties and methods of the parent class and can also add new properties and methods.
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I applied via Walk-in and was interviewed in Mar 2021. There was 1 interview round.
I applied via Recruitment Consulltant and was interviewed before Apr 2021. There were 3 interview rounds.
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Based on strings and array
I applied via Company Website and was interviewed in Dec 2020. There was 1 interview round.
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