posNeg

Problem:

Given 2 int values, return true if one is negative and one is positive. Except if the parameter "negative" is true, then return true only if both are negative.

Test Cases:

posNeg(1, -1, false) → true
posNeg(-1, 1, false) → true
posNeg(-4, -5, true) → true

Solution:

public boolean posNeg(int a, int b, boolean negative) {
  if (negative) {
    return (a < 0 && b < 0);
  }
  else {
    return ((a < 0 && b > 0) || (a > 0 && b < 0));
  }
}