Rupicard Interview Questions and Answers

Q1. Climbing Stairs Problem: You are climbing a staircase with n steps. Each time you can either climb 1 or 2 steps. In addition, suppose you have the ability to skip a step if needed. Write a function to coun...read more
Ans. 
Count distinct ways to climb n steps by climbing 1 or 2 steps at a time, with the ability to skip steps.
• Use dynamic programming to solve this problem efficiently.

• Define a recursive function to calculate the number of ways to climb to the top.

• Consider base cases where n is 0, 1, or 2 for easy calculation.

• Example: For n = 3, there are 3 distinct ways: 1+1+1, 1+2, 2+1.
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Q2. Combination Sum II - Given a collection of candidates (distinct integers) and a target number, find all unique combinations in candidates where the candidate numbers sum to the target. Each number in the c...read more
Ans. 
Find unique combinations of candidate numbers that sum to target, each number can be used only once.
• Use backtracking to explore all possible combinations

• Sort the candidates array to avoid duplicate combinations

• Skip duplicates while exploring combinations to ensure uniqueness
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Q1. Related javasript in deprth
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Q2. Related to react in depth
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Q1. Calculator using react
Ans. 
A calculator app built using React framework.
• Use React components to create the UI for the calculator

• Implement functions for basic arithmetic operations like addition, subtraction, multiplication, and division

• Handle user input and display the result dynamically on the screen
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Q1. General hr type question
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DP medium tricky question - variation of climbing stairs

Machine coding round