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jyotikajaiswal / Decoding-Leetcode

Collection of LeetCode questions to ace the coding interview! - Created using [LeetHub](https://github.com/QasimWani/LeetHub)
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Arithmetic Slices - Subsequence #1

Open jyotikajaiswal opened 2 years ago

jyotikajaiswal commented 2 years ago

Given an integer array nums, return the number of all the arithmetic subsequences of nums.

A sequence of numbers is called arithmetic if it consists of at least three elements and if the difference between any two consecutive elements is the same.

For example, [1, 3, 5, 7, 9], [7, 7, 7, 7], and [3, -1, -5, -9] are arithmetic sequences. For example, [1, 1, 2, 5, 7] is not an arithmetic sequence. A subsequence of an array is a sequence that can be formed by removing some elements (possibly none) of the array.

For example, [2,5,10] is a subsequence of [1,2,1,2,4,1,5,10]. The test cases are generated so that the answer fits in 32-bit integer.

jayitsaha commented 2 years ago

Please assign me this issue!