leetcode/1070_convert-to-base-2/README.md

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Given an integer `n`, return _a binary string representing its representation in base_ `-2`.
**Note** that the returned string should not have leading zeros unless the string is `"0"`.
**Example 1:**
Input: n = 2
Output: "110"
Explantion: (-2)2 + (-2)1 = 2
**Example 2:**
Input: n = 3
Output: "111"
Explantion: (-2)2 + (-2)1 + (-2)0 = 3
**Example 3:**
Input: n = 4
Output: "100"
Explantion: (-2)2 = 4
**Constraints:**
* `0 <= n <= 109`