2023.05.23 Problem: 119. Pascal's Triangle II - Githubissues

umdreamer / leetcodeproblems

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2023.05.23 Problem: 119. Pascal's Triangle II #20

Closed umdreamer closed 1 year ago

umdreamer commented 1 year ago

Pascal's Triangle II Problem Link

Given an integer rowIndex, return the rowIndexth (0-indexed) row of the Pascal's triangle.

In Pascal's triangle, each number is the sum of the two numbers directly above it as shown:

Example 1:

Input: rowIndex = 3
Output: [1,3,3,1]

Example 2:

Input: rowIndex = 0
Output: [1]

Example 3:

Input: rowIndex = 1
Output: [1,1]

Constraints:

0 <= rowIndex <= 33

Follow up: Could you optimize your algorithm to use only O(rowIndex) extra space?

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