public class RandomWalker {
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public static void main(String[] args) {
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int x = 0;
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int y = 0;
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int passi = 0;
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int limite = Integer.parseInt(args[0]);
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System.out.println("(" + x + "," + y + ")");
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while (Math.abs(x) + Math.abs(y) < limite) {
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double r = Math.random();
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if (r < 0.25) {
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x++;
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} else if (r < 0.5) {
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x--;
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} else if (r < 0.75) {
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y++;
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} else {
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y--;
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}
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passi++;
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System.out.println("(" + x + "," + y + ")");
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}
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System.out.println("steps = " + passi);
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}
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}
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