Given a two-dimensional integer matrix, sort each of the columns in ascending order.
Constraints
n, m ≤ 250 where n and m are the number of rows and columns in matrixhttps://binarysearch.com/problems/Column-Sort
Input
[[10,20,30],
[ 5, 5, 3],
[ 0,10, 7]]
Output
[[0, 5, 3], [5, 10, 7], [10, 20, 30]]Given a list of integers nums, remove numbers that appear multiple times in the list, while maintaining order of the appearance in the original list.
Given an integer k and a list of integers nums, return the length of the longest sublist that contains at most k distinct integers.
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