https://leetcode.cn/problems/pascals-triangle/description/?envType=study-plan-v2&envId=top-100-liked

题解

代码

public List<List<Integer>> generate(int numRows) {List<List<Integer>> datatList = new ArrayList<>();for(int i= 0;i < numRows;i++){List<Integer> list = new ArrayList();for(int j=0;j<=i;j++){if(j ==0 || j==i){list.add(1);}else{int data = datatList.get(i-1).get(j-1) + datatList.get(i-1).get(j);list.add(data);}}datatList.add(list);}return datatList;}