Find Products of Elements of Big Array - Practice Coding | SlaveCode
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3145. Find Products of Elements of Big Array
Hard
50 Points
Array
Binary Search
Bit Manipulation
The powerful array of a non-negative integer x is defined as the shortest sorted array of powers of two that sum up to x. The table below illustrates examples of how the powerful array is determined. It can be proven that the powerful array of x is unique.
The array big_nums is created by concatenating the powerful arrays for every positive integer i in ascending order: 1, 2, 3, and so on. Thus, big_nums begins as [1, 2, 1, 2, 4, 1, 4, 2, 4, 1, 2, 4, 8, ...].
You are given a 2D integer matrix queries, where for queries[i] = [fromi, toi, modi] you should calculate (big_nums[fromi] * big_nums[fromi + 1] * ... * big_nums[toi]) % modi.
Return an integer array answer such that answer[i] is the answer to the ith query.
Examples
Example 1
Input: queries = [[1,3,7]]
Output: [4]
Explanation:
There is one query.
big_nums[1..3] = [2,1,2] . The product of them is 4. The result is 4 % 7 = 4.
Example 2
Input: queries = [[2,5,3],[7,7,4]]
Output: [2,2]
Explanation:
There are two queries.
First query: big_nums[2..5] = [1,2,4,1] . The product of them is 8. The result is 8 % 3 = 2 .
Second query: big_nums[7] = 2 . The result is 2 % 4 = 2 .
Constraints
1 <= queries.length <= 500
queries[i].length == 3
0 <= queries[i][0] <= queries[i][1] <= 1015
1 <= queries[i][2] <= 105
3145. Find Products of Elements of Big Array
Hard
50 Points
Array
Binary Search
Bit Manipulation
The powerful array of a non-negative integer x is defined as the shortest sorted array of powers of two that sum up to x. The table below illustrates examples of how the powerful array is determined. It can be proven that the powerful array of x is unique.
The array big_nums is created by concatenating the powerful arrays for every positive integer i in ascending order: 1, 2, 3, and so on. Thus, big_nums begins as [1, 2, 1, 2, 4, 1, 4, 2, 4, 1, 2, 4, 8, ...].
You are given a 2D integer matrix queries, where for queries[i] = [fromi, toi, modi] you should calculate (big_nums[fromi] * big_nums[fromi + 1] * ... * big_nums[toi]) % modi.
Return an integer array answer such that answer[i] is the answer to the ith query.
Examples
Example 1
Input: queries = [[1,3,7]]
Output: [4]
Explanation:
There is one query.
big_nums[1..3] = [2,1,2] . The product of them is 4. The result is 4 % 7 = 4.
Example 2
Input: queries = [[2,5,3],[7,7,4]]
Output: [2,2]
Explanation:
There are two queries.
First query: big_nums[2..5] = [1,2,4,1] . The product of them is 8. The result is 8 % 3 = 2 .
Second query: big_nums[7] = 2 . The result is 2 % 4 = 2 .