add UE09_Rekursion2
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39
src/UE08_051124_Rekursion1/UE08_Rekursion.java
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39
src/UE08_051124_Rekursion1/UE08_Rekursion.java
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package UE08_051124_Rekursion1;
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public class UE08_Rekursion {
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public static void main(String[] args) {
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printFibonacciFolge(8);
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System.out.println(zaehleSelbstlaute("Hallo du MENSCH"));
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System.out.println(zahlHoch(2, 5));
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System.out.println(zahlHoch(2, 10));
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System.out.println(zahlHoch(1, 1));
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System.out.println(zahlHoch(1, 10));
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System.out.println(zahlHoch(5, 5));
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System.out.println(zahlHoch(20, 3));
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System.out.println(zahlHoch(10, 1));
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System.out.println(zahlHoch(10, 10));
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}
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public static int fibonacci(int n) {
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return n <= 2 ? n <= 0 ? 0 : 1 : fibonacci(n - 1) + fibonacci(n - 2);
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}
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public static void printFibonacciFolge(int anz) {
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for (int i = 1; i <= anz; i++) System.out.print(fibonacci(i) + " ");
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}
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public static int zaehleSelbstlaute(String s) {
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// if (s.isEmpty()) return 0;
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// if ("aeiouAEIOU".indexOf(s.charAt(0)) == -1) return 0;
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// return 1 + zaehleSelbstlaute(s.substring(1));
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return s.isEmpty() ? 0 : (("aeiouAEIOU".indexOf(s.charAt(0)) == -1) ? 0 : 1) + zaehleSelbstlaute(s.substring(1));
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}
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public static long zahlHoch(int x, int n) {
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// if (n <= 1) return x;
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// long z = zahlHoch(x, n >> 1);
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// if ((n & 1) != 0) return x * z * z;
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// return z * z;
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return n <= 1 ? x : ((n & 1) != 0 ? x * zahlHoch(x, n >> 1) * zahlHoch(x, n >> 1) : zahlHoch(x, n >> 1) * zahlHoch(x, n >> 1));
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}
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}
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