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leetcode/1017.Convert-to-Base--2/README.md
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leetcode/1017.Convert-to-Base--2/README.md
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# [1017. Convert to Base -2](https://leetcode.com/problems/convert-to-base-2/)
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## 题目:
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Given a number `N`, return a string consisting of `"0"`s and `"1"`s that represents its value in base **`-2`** (negative two).
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The returned string must have no leading zeroes, unless the string is `"0"`.
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**Example 1:**
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Input: 2
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Output: "110"
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Explantion: (-2) ^ 2 + (-2) ^ 1 = 2
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**Example 2:**
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Input: 3
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Output: "111"
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Explantion: (-2) ^ 2 + (-2) ^ 1 + (-2) ^ 0 = 3
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**Example 3:**
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Input: 4
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Output: "100"
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Explantion: (-2) ^ 2 = 4
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**Note:**
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1. `0 <= N <= 10^9`
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## 题目大意
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给出数字 N,返回由若干 "0" 和 "1"组成的字符串,该字符串为 N 的负二进制(base -2)表示。除非字符串就是 "0",否则返回的字符串中不能含有前导零。
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提示:
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- 0 <= N <= 10^9
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## 解题思路
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- 给出一个十进制的数,要求转换成 -2 进制的数
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- 这一题仿造十进制转二进制的思路,短除法即可。
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