What is the largest prime factor of the number 600851475143 ?
The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number 600851475143 ? We can start prime number 2 and …
Can we Construct K Palindrome Strings?
Given a string s and an integer k. You should construct k non-empty palindrome strings using all the characters in s. Return True if you can use all the …
Sum of Even Fibonacci Numbers
Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be: 1, 2, …
Sum of Multiples of 3 and 5
If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is …
Algorithms to Group Words by Anagrams
Given an array of strings, group anagrams together. Example: Input: , Output: , , ] Note: All inputs will be in lowercase. The order of your output does not …
Algorithm to Count the Largest Group of Digit Sums
Given an integer n. Each number from 1 to n is grouped according to the sum of its digits. Return how many groups have the largest size. Example 1: …