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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]
]
public class Solution {
public List<List<Integer>> generate(int numRows) {
List<List<Integer>> list = new ArrayList<List<Integer>>();
for(int i=0; i<numRows; i++) {
List<Integer> tList = new ArrayList<Integer>();
if(i == 0) {
tList.add(1);
}
else {
for(int j=0; j<=i; j++) {
if(j == 0 || j == i) {
tList.add(1);
}
else {
tList.add(list.get(i-1).get(j) + list.get(i-1).get(j-1));
}
}
}
list.add(tList);
}
return list;
}
}
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原文地址:http://www.cnblogs.com/wxisme/p/4589795.html