002_functions.md

Functions

Easy

1. Given a and b, your function should return the value of a^b
   Example:
   Input: power(2,3) ––> Output: 8
2. Given length of a regular hexagon, your function should return area of the hexagon.
   Example:
   Input: areaOfHexagon(10) ––> Output: 259.80
3. Given a sentence, your functions should return the number of words in the sentence.
   Example:
   Input: noOfWords(We are neoGrammers) ––> Output: 3
4. Given n numbers, your function should return the minimum of them all. The number of parameters won't be accepted from user.
   Example:
   Input: findMin(3,5) ––> Output: 3
   Input: findMin(3,5,9,1) ––> Output: 1
   (Hint: Lookup rest parameters in JavaScript)
5. Given n numbers, your function should return the maximum of them all. The number of parameters won't be accepted from user.
   Example:
   Input: findMax(3,5) ––> Output: 5
   Input: findMax(3,5,9,1) ––> Output: 9
   (Hint: Lookup rest parameters in JavaScript)
6. Given three angles of a triange, your function should return if it is a scalene, isosceles, equilateral triangle or not a triangle at all. Example:
   Input: typeOfTriangle(30, 60, 90) ––> Output: Scalene Triangle

Medium

1. Given an array, your function should return the length of the array.
   Example:
   Input: arrayLength([1,5,3,7,8]) ––> Output: 5
2. Given an array and an item, your function should return the index at which the item is present.
   Example:
   Input: indexOf([1,6,3,5,8,9], 3) ––> Output: 2
3. Given an array and two numbers, your function should replace all entries of first number in an array with the second number.
   Example:
   Input: replace([1,5,3,5,6,8], 5, 10) ––> Output: [1,10,3,10,6,8]
4. Given two arrays, your function should return single merged array.
   Example:
   Input: mergeArray([1,3,5], [2,4,6]) ––> Output: [1,3,5,2,4,6]
5. Given a string and an index, your function should return the character present at that index in the string.
   Example:
   Input: charAt("neoGcamp", 4) ––> Output: c
6. Given two dates, your function should return which one comes before the other.
   Example:
   Input: minDate('02/05/2021', '24/01/2021') ––> Output: 24/01/2021

Advanced

1. Write a function which generates a secret code from a given string, by shifting characters of alphabet by N places. Example:
   Input: encodeString("neogcamp", 2) ––> Output: pgqiecor
   Explanation: 2 represents shifting alphabets by 2 places. a –> c, b –> d, c –> e and so on.
2. Given a sentence, return a sentence with first letter of all words as capital.
   Example:
   Input: toSentenceCase('we are neoGrammers') ––> Output: We Are NeoGrammers
3. Given an array of numbers, your function should return an array in the ascending order.
   Example:
   Input: sortArray([100,83,32,9,45,61]) ––> Output: [9,32,45,61,83,100]
4. Given a sentence, your function should reverse the order of characters in each word, keeping same sequence of words.
   Example:
   Input: reverseCharactersOfWord('we are neoGrammers') –––> Output: ew era sremmarGoen