16. Divide Two Integers
Given two integers dividend and divisor, return their quotient truncated toward zero.
Prefer an implementation that does not use multiplication, division, or the modulo operator.
範例 1:
輸入： dividend = 10, divisor = 3 輸出： 3
範例 2:
輸入： dividend = 7, divisor = -3 輸出： -2
限制條件：
-2^31 <= dividend, divisor <= 2^31 - 1divisor != 0