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Jul 23rd, 2018
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  1. public static int binomial(int n, int k) {
  2. if (k == 1) {
  3. return 1;
  4. }
  5. if (2 * k > n) {
  6. return binomial(n, n - k);
  7. }
  8. int e = n - k + 1;
  9. for (int i = 2; i <= k; i++) {
  10. e = e * (n - k + i);
  11. e = e / i;
  12. }
  13. return e;
  14. }
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