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Articles by Arnab Chakraborty
Page 22 of 377
Check if an array contains all elements of a given range in Python
Suppose we have an array called nums. We also have two numbers x and y defining a range [x, y]. We have to check whether the array contains all elements in the given range or not.So, if the input is like nums = [5, 8, 9, 6, 3, 2, 4] x = 2 y = 6, then the output will be true as there are all elements [2, 3, 4, 5, 6].To solve this, we will follow these steps −temp_range := y - xfor i in range 0 to size of nums, doif |nums[i]| >= x and |nums[i]| 0, ...
Read MoreProgram to find how max score we can get by removing 10 or 01 from binary string in Python
Suppose we have a binary string s and two values zero_one and one_zero. Now let us consider an operation where we can delete any substring "01" and receive zero_one points. Or we can remove any substring "10" and receive one_zero points. We have to find the maximum number of points we can get after any number of operations.So, if the input is like s = "10100101" zero_one = 3 one_zero = 2, then the output will be 11, as we can remove "01" three times to get 3*3 = 9 points. Then the remaining string is 10. By removing this ...
Read MoreProgram to find maximum possible value of smallest group in Python
Suppose we have a list of numbers called nums and another value k. We have to split the list into k contiguous groups. The smallest group is the one whose sum is the smallest out of all the groups. So find the maximum possible value of the smallest group.So, if the input is like nums = [2, 6, 4, 5, 8] k = 3, then the output will be 8, as we can split the list into three groups like: [2, 6], [4, 5], [8]. So the minimum group has sum 8.To solve this, we will follow these steps −Define ...
Read MoreCheck if an array is stack sortable in C++
Suppose we have an array nums of unique elements from 1 through n. We have to check whether it is stack-sortable or not. An array is stack sortable when it can be stored in some other array using a temporary stack.To solve this, we can use any of these operations on the array −Delete the starting element of array and push that item into the stack.Delete the top element of the stack and insert it to the end of second array.Now if all the element of the given array is transferred to the second array by these operations so the ...
Read MoreProgram to find length of subsequence that can be removed still t is subsequence of s in Python
Suppose we have a string s and another string t. And t is a subsequence of s. We have to find the maximum length of a substring that we can remove from s so that, t is still a subsequence of s.So, if the input is like s = "xyzxyxz" t = "yz", then the output will be 4, as We can remove the substring "abca"To solve this, we will follow these steps −left := a new list, right := also a new listc1 := -1, c2 := -1, c3 := -1j := 0for i in range 0 to size ...
Read MoreCheck if an array of 1s and 2s can be divided into 2 parts with equal sum in Python
Suppose we have an array nums which only stores 1 and 2 in it. We have to check whether the array can be divided into two different parts such that sum of elements in each part is same.So, if the input is like nums = [1, 1, 2, 2, 2], then the output will be True as we can divide this array like [1, 1, 2] and [2, 2] the sum of each part is 4.To solve this, we will follow these steps −total := 0, one_count := 0total := sum of all elements of numsone_count := count of 1s ...
Read MoreProgram to find list of elements which are less than limit and XOR is maximum in Python
Suppose we have a list of numbers nums and a list of queries where each query contains [x, limit]. We have to find a list such that for each query [x, limit], we find an element e in nums such that e ≤ limit and e XOR x is maximized. If there is no such element, return -1.So, if the input is like nums = [3, 5, 9] queries = [[4, 6], [2, 0]], then the output will be [3, -1], as for the first query, we can use 2 or 4 in nums. 3 ^ 4 = 7 while ...
Read MoreProgram to find intervals by merging target interval in Python
Suppose we have a list of non-overlapping intervals. These are sorted based on end time. We have another interval target, find final interval after merging target so that intervals are still non-overlapping and sorted.So, if the input is like intervals = [[1, 15],[25, 35],[75, 90]], target = [10, 30], then the output will be [[1, 35], [75, 90]] as first two intervals [1, 15] and [25, 35] are merged.To solve this, we will follow these steps −insert target at the end of ivsort iv based on start timeres := a new list with first intervali := 1while i < size of iv, doif start time of iv[i]
Read MoreCheck if an encoding represents a unique binary string in Python
Suppose we have an array called nums represents an encoding of a binary string of size k, we have to check whether given encoding uniquely finds a binary string or not. Here the encoding has counts of contiguous 1s which are separated by single 0s.So, if the input is like nums = [4, 2, 3] k = 11, then the output will be True as there is a binary string like 11110110111 of k = 11.To solve this, we will follow these steps −total := sum of all elements in numstotal := total + size of nums - 1return true ...
Read MoreProgram to count number of words we can generate from matrix of letters in Python
Suppose we have a 4 x 4 board of letters and a list of words, we have to find the largest number of words that can be generated in the board by a sequence of adjacent letters, using one cell at most once per word (but we can reuse cells for other words). We can go up, down, left, right, or diagonal direction.So, if the input is likembfdxayatztrsqqqwords = ["bat", "far", "mat"], then the output will be 3, as we can generate mat [0, 1] → [1, 1] → [2, 0], bat [0, 2] → [1, 1] → [2, 2], ...
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