LeetCode 5108. Encode Number - Java - 2进制
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题目链接：https://leetcode-cn.com/problems/encode-number/
Given a non-negative integer num, Return its encoding string. @wowpH
The encoding is done by converting the integer to a string using a secret function that you should deduce from the following table:
Example 1:
Input: num = 23
Output: "1000"
Example 2:
Input: num = 107
Output: "101100"
Constraints:
0 <= num <= 10^9
题解
| f(n) | 前面加"1" | 10进制 | n |
|---|---|---|---|
| "" | "1" | 1 | 0 |
| "0" | "10" | 2 | 1 |
| "1" | "11" | 3 | 2 |
| "00" | "100" | 4 | 3 |
| "01" | "101" | 5 | 4 |
| "10" | "110" | 6 | 5 |
| "11" | "111" | 7 | 6 |
| "000" | "1000" | 8 | 7 |
Java代码
class Solution {
public String encode(int num) {
return Integer.toBinaryString(num + 1).substring(1);
}
}
原文链接：https://www.cnblogs.com/wowpH/p/11880529.html
