Suppose we have two arrays called nums1 and nums2, they have same number of elements N. Now consider a set S with N elements from 1 through N. We have to find the value of (nums1[i1] + nums1[i2] + ... nums1[ik])^2 + (nums2[i1] + nums2[i2] + ... nums2[ik])^2 where {i1, ... Read More

Suppose, we are given a string 'input_str'. If we determine all the suffixes from input_str; for example if the string is 'abcd', the suffixes are 'abc', 'bcd', 'cd', 'd'. Now, we check the similarity between input_str and all the suffixes by the length of the longest common prefix in input_str ... Read More

Suppose, we are given a string 'input_str'. Now, we are asked to determine every possible substring from the given string then concatenate all the substrings one after another in a lexical order into another string. We are also provided an integer value k. Our task is to return the letter ... Read More

Suppose, we are given a number n and are asked to write all the possible permutations with the positive integers up to n. The permutations are then sorted lexicographically and numbered from 1 to n. Among all the permutations, one permutation is taken and is termed as the special permutation. ... Read More

Suppose, we have to build a string 'str' that is of length n. To build the string, we can perform two operations.A character can be added to the end of str for cost a.A substring sub_str can be added to the end of the str for cost r.We have to ... Read More

Suppose we have a binary string s. Now let us consider an operation, where we split the string into two non-empty substrings s1 and s2. The score of this split is the sum of "0"s count in s1 and sum of "1"s count in s2. We have to find the ... Read More

Suppose we have a given matrix, We have to find a new matrix res, whose dimension is same as the given matrix where each element in res[i, j] = sum of the elements of matrix[r, c] for each r ≤ i, and c ≤ j.So, if the input is like8274then ... Read More

Suppose we have a list called nums and a value k, now let us consider an operation by which we can update the value of any number in the list. We have to find the length of the longest sublist which contains repeated numbers after performing at most k operations.So, ... Read More

Suppose we have a list of lowercase alphabet strings called words. We have to find the length of the longest contiguous sublist where the first letter of each words have the same first letter.So, if the input is like words = ["she", "sells", "seashells", "on", "the", "sea", "shore"], then the ... Read More

Suppose we have three numbers n, a and b. Consider we are in a line of n people. And we are unaware about our position in the line. But we know there are at least a number of people in front of us and at most b number of people ... Read More