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Given an integer array arr and an integer difference, return the length of the longest subsequence in arr which is an arithmetic sequence such that the difference between adjacent …
Given an array of integers A, return the largest integer that only occurs once. If no integer occurs once, return -1. Example 1: Input: Output: 8 Explanation: The maximum …
The Tribonacci sequence Tn is defined as follows: T0 = 0, T1 = 1, T2 = 1, and Tn+3 = Tn + Tn+1 + Tn+2 for n >= 0. …
There is a fence with n posts, each post can be painted with one of the k colors. You have to paint all the posts such that no more …
There are a row of n houses, each house can be painted with one of the three colors: red, blue or green. The cost of painting each house with …