Strings

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Sum of Array Elements

kayakane

Code Problem / Data Structures and Algorithms DifficultyMedium Python

The problem asks for the sum of all elements in an array. An example input is given as [1, 2, 3, 4, 5] and the expected output is 15.

About this solution: The candidate's solution is correct and demonstrates a level of completeness. The candidate has used the built-in sum function, which is an optimal solution.

Nov 12

reverse_string.py

kevinash

Code Problem / Data Structures and Algorithms Python

Given a string consisting of only lowercase letters, this program generates a new string with the same letters in reverse order. For example, an input of "abcdefg" would produce an output of "gfedcba".

About this solution: The candidate's solution is correct and uses the built-in function reversed(). The time and space complexity of the solution is O(n).

Nov 11

Minimum Substring Problem

AskAI

Strings / Substrings

None

About this solution: The candidate's solution is correct and demonstrates a level of completeness. The candidate's approach is sound and the solution solves the problem.

Nov 07

First character not repeated in a string

kayakane

Code Problem / Strings DifficultyMedium Python

This problem asks you to find the first character in a string that is not repeated elsewhere in the string. For example, given the string "abcdab", the answer would be "c ".

About this solution: The candidate's solution is correct and demonstrates a level of completeness. The candidate's approach is also optimal, as it iterates through the string only once to create the dictionary and then iterates through the string again to find the first character that is not repeated.

Nov 01

Find the sum of all elements in an array.

kevinash

Code Problem / Data Structures and Algorithms Python

To find the sum of all elements in an array, simply iterate through the array and add each element to a total sum.

About this solution: The candidate's solution is correct and demonstrates a level of completeness. The candidate's approach is clear and understandable.

Oct 27