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Difference between SQL DELETE and TRUNCATE
DELETE is a DML command while TRUNCATE is a DDL command
DELETE removes specific rows from a table while TRUNCATE removes all rows
DELETE can be rolled back while TRUNCATE cannot be rolled back
DELETE is slower than TRUNCATE as it logs each row deletion
I applied via Approached by Company and was interviewed in Dec 2023. There was 1 interview round.
A mountain array is an array that increases to a peak and then decreases.
Check if the array has a peak where all elements before the peak are in increasing order and all elements after the peak are in decreasing order.
Example: ['1', '2', '3', '4', '5', '4', '3', '2', '1'] is a mountain array.
Example: ['1', '2', '3', '4', '5', '5', '4', '3', '2', '1'] is not a mountain array.
let is block scoped, const is constant, var is function scoped
let: block scoped, can be reassigned, not hoisted
const: block scoped, cannot be reassigned, not hoisted
var: function scoped, can be reassigned, hoisted
Example: let x = 10; const y = 20; var z = 30;
TruKKer interview questions for popular designations
I applied via Naukri.com and was interviewed in Jan 2023. There were 2 interview rounds.
I applied via Referral and was interviewed before Apr 2023. There was 1 interview round.
I applied via Recruitment Consultant and was interviewed in May 2020. There were 3 interview rounds.
Diameter of a binary tree is the longest path between any two leaf nodes.
Calculate the height of left and right subtrees recursively.
Calculate the diameter recursively using the formula max(left_height + right_height + 1, max(left_diameter, right_diameter)).
Return the maximum diameter.
To find interchanged terms from an AP series
Identify the common difference between terms
Swap the positions of adjacent terms
Check if the new series is also an AP
Repeat until no more interchanged terms can be found
Database indexing is a technique to improve the performance of database queries.
Indexing creates a data structure that allows for faster retrieval of data.
Indexes are created on one or more columns of a table.
Queries that use indexed columns can be executed faster.
Indexes can be clustered or non-clustered.
Clustered indexes determine the physical order of data in a table.
Non-clustered indexes create a separate structure...
based on 12 interviews
Interview experience
5-8 Yrs
Not Disclosed
4-10 Yrs
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Supply Chain Executive
25
salaries
| ₹0 L/yr - ₹0 L/yr |
Product Manager
13
salaries
| ₹0 L/yr - ₹0 L/yr |
Product Owner
10
salaries
| ₹0 L/yr - ₹0 L/yr |
Team Lead
10
salaries
| ₹0 L/yr - ₹0 L/yr |
Senior Software Engineer
9
salaries
| ₹0 L/yr - ₹0 L/yr |
BlackBuck
Delhivery
Ecom Express
Shadowfax Technologies