Code Challenges

Get better at coding with practice problems.

Coding Challenges

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Showing 14 of 33 problems
Loop Array Decision Making
Intermediate

Implement the findSecondLargestDistinct method that returns the second largest distinct value from the array. Solved

Loop Array Two Pointers
Learner

Implement the moveZerosToEndCopy method that returns a copy of the array with all zero values moved to the end. Solved

Loop Array Decision Making
Learner

Implement the isArrayStrictlyIncreasing method that checks whether every array element is greater than the element before it. Solved

Loop Array Two Pointers
Learner

Implement the reverseArrayCopy method that returns a new array with the input elements in reverse order. Solved

Loop Array Counting
Beginner

Implement the method countEvenNumbers that returns how many even numbers are in an array. Solved

Loop String Counting
Learner

Implement the method countConsonants that returns the number of consonants in a string. Solved

Loop Math
Beginner

Implement the method sumOfSquares that returns the sum of squares from 1 to n. Solved

Loop Math
Learner

Implement the method fibonacci that returns the nth Fibonacci number. Solved

Loop Array Linear Search
Learner

Implement the method findSecondLargest that returns the second largest distinct integer in an array. Solved

Loop String Counting
Learner

Implement the method countOccurrences that takes a string and a character as input and returns the number of times that character appears in the string. Solved

Loop Math
Beginner

Implement the method sumDigits that takes an integer as input and returns the sum of its digits. Solved

Loop Math
Learner

Implement the method factorial that takes a non-negative integer as input and returns its factorial. Solved

Loop String Counting
Learner

Implement the method countVowels that returns the number of vowels present in a given string. Solved

Loop Array Math
Learner

Implement the method sumArray that calculates and returns the sum of all integers in an input array. Solved