Pascal's Triangle
Ericsson● EasyFULLTIMEONSITE INTERVIEWProblem statement
Complete the function below. The function receives the number of rows and returns the generated Pascal's Triangle.
Problem Problem: Pascal's Triangle
Given a non-negative integer numRows, generate the first numRows rows of Pascal's Triangle and return them as a 2D array triangle.
Pascal's Triangle is defined as:
Row i (0-indexed) contains i+1 elements.
The first and last element of each row is 1.
For other positions: triangle[i][j] = triangle[i-1][j-1] + triangle[i-1][j] for 0 < j < i.
Input
A single integer: numRows
Output
Print a 2D array (you may print each row as a list) representing the first numRows rows.
Constraints 0 <= numRows <= 30
Example Input:
5
Output:
[
[1],
[1,1],
[1,2,1],
[1,3,3,1],
[1,4,6,4,1]
]
Example Input
0
Output
[]
Function
solvePascalsTriangle(numRows: int) → int[][] Complete solvePascalsTriangle. It has one parameter, int numRows. Return the first numRows rows of Pascal's Triangle as a 2D integer array.
Examples
Example 1
numRows = 5return = [[1], [1, 1], [1, 2, 1], [1, 3, 3, 1], [1, 4, 6, 4, 1]]The returned string array must match the expected standard output lines for the sample input.
Constraints
- Use the limits and requirements stated in the prompt.