30 lines
820 B
Java
30 lines
820 B
Java
public class Feigenbaum {
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public static void main(String[] args) {
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int max_it = 13;
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int max_it_j = 10;
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double a1 = 1.0;
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double a2 = 0.0;
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double d1 = 3.2;
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double a;
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System.out.println(" i d");
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for (int i = 2; i <= max_it; i++) {
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a = a1 + (a1 - a2) / d1;
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for (int j = 0; j < max_it_j; j++) {
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double x = 0.0;
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double y = 0.0;
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for (int k = 0; k < 1 << i; k++) {
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y = 1.0 - 2.0 * y * x;
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x = a - x * x;
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}
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a -= x / y;
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}
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double d = (a1 - a2) / (a - a1);
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System.out.printf("%2d %.8f\n", i, d);
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d1 = d;
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a2 = a1;
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a1 = a;
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}
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}
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}
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