Array-1-N | K5kC

Find two repeating elements in a given ranged array

Find duplicate number in array containing n+1 numbers between 1 and n

Finding the most frequent element in an array of numbers from 0 to n-1

Find first duplicate number in an array containing numbers from 1 to n

Find duplicates in an array of integers within range 0 to n-1

Find duplicate number in array with 1 to N+1 numbers with one number repeating