基于Java实现杨辉三角 LeetCode Pascal's Triangle

import java.util.ArrayList;import java.util.List;public class Par {public static void main(String[] args) {System.out.println(generate(1));System.out.println(generate(0));System.out.println(generate(2));System.out.println(generate(3));System.out.println(generate(4));System.out.println(generate(5));}public static List<List<Integer>> generate(int numRows) {List<List<Integer>> result = new ArrayList<List<Integer>>(numRows);for (int i = 0; i < numRows; i++) {List<Integer> thisRow = new ArrayList<Integer>(i);thisRow.add(1);int temp = 1;int row = i;for (int j = 1; j <= i; j++) {temp = temp * row-- / j ;thisRow.add(temp);}result.add(thisRow);}return result;}}