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Basic coding questions asked on syntax of java
HashMap and Hashtable are both data structures used to store key-value pairs, but they differ in their implementation and features.
HashMap allows null keys and values, while Hashtable does not.
HashMap is not synchronized, while Hashtable is.
HashMap is generally faster than Hashtable, but not thread-safe.
Hashtable is thread-safe, but slower than HashMap.
HashMap is part of the Java Collections Framework, while Hashtable ...
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posted on 27 Mar 2022
posted on 30 Aug 2016
I applied via Campus Placement
Time ,speed ,distance
Java application using oops concept
I applied via Referral and was interviewed before Sep 2022. There were 4 interview rounds.
I applied via Referral and was interviewed before Aug 2022. There were 3 interview rounds.
1 hour interview. Needed to solve parts of single question. Next part would open only after completing the current part
I appeared for an interview in Apr 2021.
Round duration - 90 minutes
Round difficulty - Medium
Timing was 9 PM. Platform was not good. Platform was very lagging so overall it was bad experience.
Given an array 'ARR' of 'N' distinct integers, determine the third largest element in the array.
The first line contains a single integer 'T' representing the numb...
Find the third largest element in an array of distinct integers.
Sort the array in descending order and return the element at index 2.
Handle cases where the array has less than 3 elements separately.
Use a set to store distinct elements for efficient processing.
You are provided with a string STR
of length N. The task is to find the longest palindromic substring within STR
. If there are several palindromic substring...
Find the longest palindromic substring in a given string.
Iterate through the string and expand around each character to find palindromes
Keep track of the longest palindrome found so far
Return the longest palindromic substring
In this problem, Ninja is provided with two lines on a 2D plane. The first line 'AB' is determined by two points A and B. The second line 'PQ' is determined by two poi...
Calculate the intersection point of two lines on a 2D plane with precision up to six decimal places.
Implement a function to calculate the intersection point of two lines on a 2D plane
Handle precision up to six decimal places in the output
Return -1.000000 -1.000000 if the lines do not intersect
Ensure the lines 'AB' and 'PQ' are distinct
Tip 1 : Have some projects.
Tip 2 : Do a course from Coding Ninjas.
Tip 1 : Keep it short
Tip 2 : Add skills iff you are sure
I appeared for an interview in Apr 2021.
Round duration - 90 minutes
Round difficulty - Medium
Timing was 9 PM. Platform was not good. Platform was very lagging so overall it was bad experience.
Given an array 'ARR' of 'N' distinct integers, determine the third largest element in the array.
The first line contains a single integer 'T' representing the numb...
Find the third largest element in an array of distinct integers.
Sort the array in descending order and return the element at index 2.
Handle cases where there are less than 3 elements in the array.
Consider edge cases like negative integers and duplicates.
You are provided with a string STR
of length N
. The goal is to identify the longest palindromic substring within this string. In cases where multiple palind...
Identify the longest palindromic substring in a given string.
Iterate through each character in the string and expand around it to find palindromes
Keep track of the longest palindrome found so far
Return the longest palindromic substring with the smallest start index
In this problem, Ninja is provided with two lines on a 2D plane. The first line 'AB' is determined by two points A and B. The second line 'PQ' is determined by two poi...
Calculate the intersection point of two lines on a 2D plane with precision up to six decimal places.
Implement a function to calculate the intersection point of two lines on a 2D plane
Handle precision up to six decimal places in the output
Return -1.000000 -1.000000 if the lines do not intersect
Ensure the lines 'AB' and 'PQ' are distinct
Tip 1 : Have some projects.
Tip 2 : Do a course from Coding Ninjas.
Tip 1 : Keep it short.
Tip 2 : Do not put false things.
I appeared for an interview in Apr 2021.
Round duration - 90 minutes
Round difficulty - Hard
Timing was 9 PM. Platform was not good. Platform was very lagging so overall it was bad experience.
Given an array 'ARR' of 'N' distinct integers, determine the third largest element in the array.
The first line contains a single integer 'T' representing the numb...
Find the third largest element in an array of distinct integers.
Sort the array in descending order and return the element at index 2.
Handle cases where the array has less than 3 elements separately.
Consider using a set to ensure distinct elements in the array.
You are provided with a string STR
of length N
. The goal is to identify the longest palindromic substring within this string. In cases where multiple palind...
Identify the longest palindromic substring in a given string.
Iterate through the string and expand around each character to find palindromes
Keep track of the longest palindrome found
Return the longest palindromic substring with the smallest start index
In this problem, Ninja is provided with two lines on a 2D plane. The first line 'AB' is determined by two points A and B. The second line 'PQ' is determined by two poi...
Calculate the intersection point of two lines on a 2D plane with precision up to six decimal places.
Use the formula for finding the intersection point of two lines in 2D space.
Handle precision issues that may arise due to floating-point arithmetic.
Return -1.000000 -1.000000 if the lines do not intersect.
Ensure the lines 'AB' and 'PQ' are distinct.
Tip 1 : Have some projects.
Tip 2 : Do a course from Coding Ninjas.
Tip 1 : Keep it short.
Tip 2 : Do not put false things.
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