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Arnab Chakraborty has Published 4452 Articles
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Arnab Chakraborty
171 Views
Suppose we have a circular list called nums. So the first and the last elements are neighbors. So starting from any index say i, we can move nums[i] number of steps forward if nums[i] is a positive value, otherwise backwards if it's a negative value. We have to check whether ... Read More
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Arnab Chakraborty
386 Views
Suppose we have a string s which consists of only three characters "X", "(", and ")". The string has balanced brackets and in between some "X"s are there along with possibly nested brackets may also there recursively. We have to find the number of "X"s at each depth of brackets ... Read More
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Arnab Chakraborty
567 Views
Suppose we have a lowercase string s and another list of integers called shifts whose length is same as the length of s. Here each element in shifts[i] indicates it to shift the first i + 1 letters of s by shifts[i] positions. If shifting crosses 'z' it will be ... Read More
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Arnab Chakraborty
204 Views
Suppose we have a list of numbers called bricks and two other values width and height. Each element in bricks[i] represents a brick whose length is bricks[i] units and width is 1 unit. We have to find the number of ways to lay the bricks such that we get full ... Read More
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Arnab Chakraborty
172 Views
Suppose we have two list of numbers nums1 and nums2. And also have two numbers lower and upper. We have to find the number of pairs (i, j) such that lower ≤ nums1[i]^2 + nums2[j]^2 ≤ upper.So, if the input is like nums1 = [5, 3, 2] nums2 = [8, ... Read More
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Arnab Chakraborty
230 Views
Suppose we have a string s, that represents the moves of a robot. Robot is currently at (0, 0) position and it is facing north. The move string s may have these characters"F" to move forward direction, one unit"L" to rotate 90 degrees’ left"R" to rotate 90 degrees’ rightSo if ... Read More
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Arnab Chakraborty
227 Views
Suppose we have two values start and end, we have to find the bitwise AND of all numbers in the range [start, end] (both inclusive).So, if the input is like start = 8 end = 12, then the output will be 8 is 1000 in binary and 12 is 1100 ... Read More
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Arnab Chakraborty
132 Views
Suppose we have a binary list with 0s or 1s. We also have another input called k, we have to find the number of sublists whose sum is same as k.So, if the input is like nums = [1, 0, 0, 1, 1, 1, 0, 1] k = 3, then ... Read More
Program to find list showing total distance required to move all balls to current position in Python
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Arnab Chakraborty
91 Views
Suppose we have a binary list called nums containing only 0s and 1s where a 0 indicates empty cell and 1 indicates the cell is filled by a ball. We have to find a new list of say L, whose size is also same like nums size, where L[i] is ... Read More
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Arnab Chakraborty
346 Views
Suppose we have a string s with four directions "N", "S", "W" and "E" for North, South, West and East respectively. We have to find the size of the shortest substring we can update such that each of the four directions occur n/4 times each, where n is the size ... Read More