Find Missing Numbers in Array - Java
A method to find all missing numbers in an array within an inclusive range. int [] findMissingNumbers ( int [] arr , int from , int to ) { int [] count = new int [ to - from + 1 ] ; int numEmpty = count . length , k = 0 ; for ( int num : arr ) if ( num >= from && num <= to ) if ( count [ num - from ] ++ == 0 ) numEmpty --; int [] missingNums = new int [ numEmpty ] ; for ( int i = 0 ; i < count . length ; i ++ ) if ( count [ i ] == 0 ) missingNums [ k ++ ] = i + from ; return missingNums ; } I was trying to use this method as a small step in a random generation for a game I've been working on, and I noticed that most of the code I saw online uses several loops and requires many preconditions, such...