标签:des style blog color strong for
Problem Description:
Given numRows, generate the first numRows of Pascal‘s triangle.
For example, given numRows = 5,
Return
[ [1], [1,1], [1,2,1], [1,3,3,1], [1,4,6,4,1] ]
1 public List<List<Integer>> generate(int numRows) { 2 List<List<Integer>> triangle = new ArrayList<List<Integer>>(); 3 for (int i = 0; i < numRows; i++) { 4 List<Integer> row = new ArrayList<Integer>(); 5 for (int j = 0; j <= i; j++) { 6 if (j == 0 || j == i) { 7 row.add(1); 8 } else { 9 row.add(triangle.get(i-1).get(j-1) + triangle.get(i-1).get(j)); 10 } 11 } 12 13 triangle.add(row); 14 } 15 16 return triangle; 17 }
Problem Pascal's Triangle,布布扣,bubuko.com
标签:des style blog color strong for
原文地址:http://www.cnblogs.com/liew/p/3815139.html