一道简单的JAVA踢，请各位大神为新手的我解决一下
public class BetterProgrammerTask {public static int getRequiredNumberOfBits(int N) {
/*
Please implement this method to
return the number of bits which is just enough to store any integer from 0 to N-1 inclusively
for any int N > 0
Example: to store 5 integers from 0 to 4 you need 3 bits: 000, 001, 010, 011, 100 and 101
*/
}
} java bit --------------------编程问答--------------------
--------------------编程问答-------------------- 这题的意思你可以解释一下给我听么？我还没搞懂题目意思 --------------------编程问答-------------------- 你自己不是实现了么，还想问什么 --------------------编程问答--------------------
public static int getRequiredNumberOfBits(int N) {
/*
Please implement this method to
return the number of bits which is just enough to store any integer from 0 to N-1 inclusively
for any int N > 0
Example: to store 5 integers from 0 to 4 you need 3 bits: 000, 001, 010, 011, 100 and 101
*/
String str = "";
if(N>0){
str = Integer.toBinaryString(N);
}
return str.length();
}
--------------------编程问答--------------------
public static int getRequiredNumberOfBits(int n){/*
Please implement this method to
return the number of bits which is just enough to store any integer from 0 to N-1 inclusively
for any int N > 0
Example: to store 5 integers from 0 to 4 you need 3 bits: 000, 001, 010, 011, 100 and 101
*/
n = n-1;
int count = 0;
do {
count++;
n >>>= 1;
} while (n > 0);
return count;
} --------------------编程问答--------------------
--------------------编程问答--------------------
就是把n转化成2进制 然后求这个2进制的长度 代码参照一楼
补充：Java , Java相关
