Given a non-negative integer numRows, generate the first numRows of Pascal's triangle.
In Pascal's triangle, each number is the sum of the two numbers directly above it.Example:
Input: 5 Output: [ [1], [1,1], [1,2,1], [1,3,3,1], [1,4,6,4,1] ]
/** * @param {number} numRows * @return {number[][]} */ var generate = function(numRows) { if (numRows === 0) { return []; } let result = []; for (let i = 0; i < numRows; i++) { let row = []; result.push(row); for (let j = 0; j < i + 1; j++) { if (j === 0 || j === i) { row.push(1); } else { const temp = result[i-1][j-1] + result[i-1][j]; row.push(temp); } } result[i] = row; } return result; };