34 lines
629 B
Text
34 lines
629 B
Text
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bool isEven(int x) {
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if (divide(x, 2) * 2 == x) {
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return true;
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} else {
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return false;
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}
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}
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int divide (int a, int b) {
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if (b == 0) {
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return 0;
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}
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var result = 0;
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while (a > 0) {
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a = a - b;
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result = result + 1;
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}
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return result;
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}
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int helper(int x, int count) {
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if (x == 1) {
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return count;
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} else if (isEven(x)) {
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return helper(divide(x, 2), count + 1);
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} else {
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return helper(3 * x + 1, count + 1);
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}
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}
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int collatz(int x) {
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return helper(x, 0);
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}
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int program(int argc, string[] argv) {
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return collatz(12);
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}
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