Recursive example 1 double power(double x, int n) // post: returns x^n

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Presentation transcript:

Recursive example 1 double power(double x, int n) // post: returns x^n { if (n == 0) return 1.0; } return x * power(x, n-1); x: n: Return value:

Recursive example 2 double fasterPower(double x, int n) // post: returns x^n { if (n == 0) { return 1.0; } double semi = fasterPower(x, n/2); if (n % 2 == 0) { return semi*semi; return x * semi * semi; x: n: Return value:

Recursive example 3 String mystery(int n) { if (n < 2) { return "" + n; WriteBinary(-n); } else { return mystery(n / 2) + (n % 2); n: Return value: