TechSophy Interview Questions, Process, and Tips

Q1. Secure way of storing tokens
Ans. 
Secure way of storing tokens
• Use a secure token storage mechanism like Keychain on iOS or SharedPreferences on Android

• Encrypt the tokens before storing them

• Implement proper access controls and permissions to restrict access to the tokens

• Regularly rotate and invalidate tokens to minimize the risk of unauthorized access
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Q2. Least number of iterations in which to find one defective weight among equal weights
Ans. 
The minimum number of iterations required to find one defective weight among equal weights.
• Use binary search to divide the weights into two groups.

• Compare the sum of weights in each group to identify the defective group.

• Repeat the process with the defective group until the defective weight is found.
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Q1. Spread operator, nullish coelising, optional chaining operator etc
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Q2. Sorting algorithm in C
Ans. 
Sorting algorithm in C
• Popular sorting algorithms in C include Bubble Sort, Insertion Sort, Selection Sort, Merge Sort, Quick Sort, and Heap Sort

• Bubble Sort is simple but inefficient, while Merge Sort and Quick Sort are more efficient but more complex

• The choice of sorting algorithm depends on the size of the data set and the desired time complexity
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Q1. Least number of steps to reach end of array
Ans. 
Minimum steps to reach end of array
• Use dynamic programming approach

• Start from the end and work backwards

• Keep track of minimum steps at each index
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Q2. In depth about projects done, technical aspects
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Q1. Tell me about your self
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Q1. Fibanocci series
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Q2. Prime number program
Ans. 
A prime number program checks if a given number is only divisible by 1 and itself.
• Check if the number is greater than 1

• Iterate from 2 to the square root of the number and check for divisibility

• If no divisors found, the number is prime
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Q3. Reverse string program
Ans. 
Reverse a string program using array of strings
• Create a character array to store the reversed string

• Iterate through the original string and copy characters in reverse order to the new array

• Join the characters in the new array to form the reversed string
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In 20 minutes two problems were given 1) to identify palindrome of number without converting to string 2) to create a triangle using '2'

From a video input we have to identify time in and time out of were a text appeared and what is the text

Q1. Previous experience projects
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3 Basic Coding Problems

Q1. Related to Basic Data Structures
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Q2. String Reversal using recursion
Ans. 
String reversal using recursion
• Define a function that takes a string as input

• Base case: if the length of the string is 0 or 1, return the string

• Recursive case: return the last character of the string concatenated with the result of calling the function with the string minus the last character
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Q1. Basic Indroduction Life values
Ans. 
Life values are the principles and beliefs that guide an individual's decisions and actions.
• Life values are shaped by personal experiences, culture, and upbringing.

• They can include honesty, integrity, compassion, and respect for others.

• Life values can also influence career choices and relationships.

• Examples of life values include family, education, health, and spirituality.
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