All Questions
Tagged with programming-challengeecmascript-6
65 questions
10votes
2answers
696views
Array duplicate removal for duplicates exceeding `N`-number
I recently encountered a front-end interview coding challenge question that required one to create a function which returned an array that excluded numbers that occurred more than ...
- 103
8votes
5answers
1kviews
Expanding powers of expressions of the form ax+b
I solved the following problem: Write a function expand that takes in an expression with a single, one character variable, and expands it. The expression is in the form ...
- 111
8votes
3answers
1kviews
HackerRank "Ransom Note" challenge
I have solved the Ransom Note challenge on HackerRank using JavaScript / ECMAScript 6. The challenge goes like this: A kidnapper wrote a ransom note but is worried it will be traced back to him. He ...
- 20.4k
8votes
1answer
2kviews
Merge Intervals in JavaScript
This is a task taken from Leetcode - Given a collection of intervals, merge all overlapping intervals. Example 1: ...
- 3,981
7votes
1answer
4kviews
Given a string containing just parentheses, determine if the input string is valid
The task is taken from leetcode Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is valid if: ...
- 3,981
7votes
1answer
1kviews
Code Challenge: Catching Car Mileage Numbers - 4 kyu Kata from CodeWars
Challenge Story: "7777...8?!??!", exclaimed Bob, "I missed it again! Argh!" Every time there's an interesting number coming up, he notices and then promptly forgets. Who doesn't like catching ...
6votes
4answers
3kviews
Find all letter Combinations of a Phone Number
The task is taken from LeetCode Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number could represent. A mapping of digit to letters (just ...
- 3,981
6votes
2answers
164views
Starship Comparison App with ES6 Generators and the Star Wars API
Assignment Description: Make a web application that compares starships based upon the Star Wars API. There shall be: A label "Select two Starships from the dropdown lists to compare". Two dropdown-...
- 4,814
5votes
3answers
3kviews
Reverse Integer
The task is taken from leetcode Given a 32-bit signed integer, reverse digits of an integer. Example 1: Input: 123 Output: 321 Example 2: ...
- 3,981
5votes
3answers
2kviews
Determine whether an integer is a palindrome
The task Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward. Example 1: Input: 121 Output: true Example 2: ...
- 3,981
5votes
2answers
938views
Create a min stack
The task is taken from leetcode Design a stack that supports push, pop, top, and retrieving the minimum element in constant time. push(x) -- Push element x onto stack. pop() -- Removes ...
- 3,981
5votes
2answers
2kviews
Process strings of operations
This was the task (I don't know the exact wordings anymore): You get a string with operation as input: if it is a number push it to stack if it is "DUP", then duplicate the one one top and ...
- 3,981
5votes
2answers
520views
Frequency Queries (Hackerrank)
This is the problem: You are given queries. Each query is of the form two integers described below: 1 x: Insert x in your data structure. 2 y: Delete one occurrence of y from your data ...
5votes
1answer
323views
Find the starting indices of all occurrences of the pattern in the string - KMP algorithm follow-up
The task was initially solved here, but was too buggy: Given a string and a pattern, find the starting indices of all occurrences of the pattern in the string. For example, given the string "...
- 3,981
5votes
1answer
119views
Advent Of Code 2017 Day 4 (part 2) in Functional Programming (FP)
I wanted to practice functional programming (FP) without using any library but using vanilla JavaScript only. So I took a problem from Advent of Code (the 2nd part of Day 4) You can only access the ...
- 3,981
