Multi-Language (Coding): Coin Change DP Test

Given a set of coins with different denominations and an amount of change to be made, the goal is to find the minimum number of coins required to make the change.

Available in

  • English

Summarize this test and see how it helps assess top talent with:

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1 Skills measured

  • Dynamic Programming

Test Type

Coding Test

Duration

30 mins

Level

Intermediate

Questions

1

Use of Multi-Language (Coding): Coin Change DP Test

The coin change problem is a classic problem in computer science and mathematics that involves finding the minimum number of coins required to make a certain amount of change. Given a set of coins with different denominations and an amount of change to be made, the goal is to find the minimum number of coins required to make the change.

Example: Input: sum = 4, coins[] = {1,2,3}, Output: 4 Explanation: there are four solutions: {1, 1, 1, 1}, {1, 1, 2}, {2, 2}, {1, 3}.

Skills measured

Dynamic Programming is a crucial skill in solving optimization problems efficiently, such as the Coin Change problem. In this problem, Dynamic Programming allows us to break down the larger problem of finding the minimum number of coins needed to make a certain amount of change into smaller subproblems. By storing the results of these subproblems in a table and reusing them when needed, Dynamic Programming helps to avoid redundant calculations and significantly improves the efficiency of the solution. This technique is essential for solving complex problems with overlapping subproblems and optimal substructure in a timely manner.

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6x

Recruiter efficiency

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55%

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Candidate satisfaction

94%

Candidate satisfaction

Subject Matter Expert Test

The Multi-Language (Coding): Coin Change DP Subject Matter Expert

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