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24 lines
508 B
24 lines
508 B
package class30;
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import java.util.ArrayList;
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import java.util.List;
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public class Problem_0118_PascalTriangle {
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public static List<List<Integer>> generate(int numRows) {
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List<List<Integer>> ans = new ArrayList<>();
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for (int i = 0; i < numRows; i++) {
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ans.add(new ArrayList<>());
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ans.get(i).add(1);
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}
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for (int i = 1; i < numRows; i++) {
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for (int j = 1; j < i; j++) {
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ans.get(i).add(ans.get(i - 1).get(j - 1) + ans.get(i - 1).get(j));
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}
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ans.get(i).add(1);
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}
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return ans;
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}
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}
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