Take a break

That's all for a while :)

a <-> b

How to swap values of two integer variables without using the third one?

Average storage

Write a simple program that reads integer numbers and prints average value of all read numbers after each reading. Use as little memory as possible.

1,000,000 bytes

How much memory does sorted sequence of 1,000,000 bytes require to be stored?

Strange javascript

alerter = function(x) {
  alert(x);
}
(function() {
  alerter("Test")
})()

The problem is, "Test" will never be printed. What's wrong?

chmod -x /bin/chmod

$ sudo chmod -x /bin/chmod
$ sudo chmod +x /bin/chmod
sudo: chmod: command not found

Err. What should I do now?

Round

Let's define r(x), (x > 0) like the number of the the least non-zero position in the decimal number, i. e.

r(12.1) = -1
r(2)    = 0
r(12)   = 0
r(10)   = 1

etc.

Given, b > a > 0, find all numbers in (a,b) where r() has its maxima .

(The point of the problem is to find "most rounded" numbers between a and b).