So as a programmer I need to type very fast. The thing is, that when you are programming you need characters that are seldomly in use!! As a result my skill in 10-finger-typing is decent, though in programming I still lack speed and accuracy. For those people with me, here is the first guide. Lets start with Java: void main(...) { int[] integer_array = new int[100]; for(int i = 0, length_array = integer_array.length; i < length; i +=1){ integer_array[i] =(int) (Math.random() * 100 - 200); //integer_array is filled with values from -100 until +100 if(integer_array[i] == i || (integer_array == i * -1 && i % 2 == 0)){ // some usless operation integer_array[i] = 0; System.out.print(integer_array[i] + " "); } } }