• Develop code to represent iterative processes using for loops and determine the result of these processes

Assignment

Any while loop that utilizes a counter typically has three things: the counter initializer, a condition that tests the counter, and the counter update (increment/decrement). A for loop takes all that and combines it into one line. Whether or not this saves you any time is debatable, but it does condense it to a single line.

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// while version
int x = 3;
while (x > 0) {
    System.out.println(x);
    x--;
}

// for version
for(int x = 3; x > 0; x--) {
    System.out.println(x);
}

If you got while loops, this isn’t going to be much of a change, but there are a few things to keep in mind.

  1. The initializer only runs once, before anything else in the loop.
  2. The test/condition is checked before each iteration, including the very first one.
  3. The update runs at the end of every iteration.