Given four integer arrays nums1, nums2, nums3, and nums4 all of length n, return the number of tuples (i, j, k, l) such that:
nums1
nums2
nums3
nums4
n
(i, j, k, l)
0 <= i, j, k, l < n
nums1[i] + nums2[j] + nums3[k] + nums4[l] == 0
Assume the following rules are for the tic-tac-toe game on an n x n board between two players:
n x n
Given the root of a binary search tree and a node p in it, return the in-order successor of that node in the BST. If the given node has no in-order successor in the tree, return null.
root
p
null
Given two integers representing the numerator and denominator of a fraction, return the fraction in string format.
numerator
denominator
If the fractional part is repeating, enclose the repeating part in parentheses.
Given an integer array nums, reorder it such that nums[0] < nums[1] > nums[2] < nums[3]....
nums
nums[0] < nums[1] > nums[2] < nums[3]...
You may assume the input array always has a valid answer.
Example 1:
Input: nums = [1,5,1,1,6,4]Output: [1,6,1,5,1,4]…
Given an integer array nums, design an algorithm to randomly shuffle the array. All permutations of the array should be equally likely as a result of the shuffling.
Implement the Solution class:
Solution
Solution(int[] nums)
Given an n x n matrix where each of the rows and columns is sorted in ascending order, return the kth smallest element in the matrix.
matrix
kth
Note that it is the kth smallest element in the sorted order, not the kth distinct element.
Suppose you are at a party with n people labeled from 0 to n - 1 and among them, there may exist one celebrity. The definition of a celebrity is that all the other n - 1 people know the celebrity, but the celebrity does not know any of them.
0
n - 1