Ex_1_1_14.md

title	算法4 Java解答 1.1.14
date	2019-03-02 19:38:47 +0800
draft	false
tags	JAVA
categories	技术 归档

1.1.14

问题：

Write a static method lg() that takes an int value N as argument and returns the largest int not larger than the base-2 logarithm of N. Do not use Math.

分析：

Use while loop to keep dividing the argument by 2 (base was 2), till it reaches zero.

Keep a count on the number of times the division by 2 was been performed.

Return the count - 1 as the program wants the largest integer not larger than log value.

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