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g1001_1100.s1018_binary_prefix_divisible_by_5.readme.md Maven / Gradle / Ivy

1018\. Binary Prefix Divisible By 5

Easy

You are given a binary array `nums` (**0-indexed**).

We define xi as the number whose binary representation is the subarray `nums[0..i]` (from most-significant-bit to least-significant-bit).

*   For example, if `nums = [1,0,1]`, then x0 = 1, x1 = 2, and x2 = 5.

Return _an array of booleans_ `answer` _where_ `answer[i]` _is_ `true` _if_ xi _is divisible by_ `5`.

**Example 1:**

**Input:** nums = [0,1,1]

**Output:** [true,false,false]

**Explanation:** The input numbers in binary are 0, 01, 011; which are 0, 1, and 3 in base-10. Only the first number is divisible by 5, so answer[0] is true.

**Example 2:**

**Input:** nums = [1,1,1]

**Output:** [false,false,false]

**Constraints:**

*   1 <= nums.length <= 105
*   `nums[i]` is either `0` or `1`.