1.4 KiB
1.4 KiB
id | challengeType | title | videoUrl | localeTitle |
---|---|---|---|---|
5900f37b1000cf542c50fe8e | 5 | Problem 15: Lattice paths | 问题15:格子路径 |
Description
通过给定的gridSize
有多少这样的路由?
Instructions
Tests
tests:
- text: <code>latticePaths(4)</code>应该返回70。
testString: 'assert.strictEqual(latticePaths(4), 70, "<code>latticePaths(4)</code> should return 70.");'
- text: <code>latticePaths(9)</code>应该返回48620。
testString: 'assert.strictEqual(latticePaths(9), 48620, "<code>latticePaths(9)</code> should return 48620.");'
- text: <code>latticePaths(20)</code>应该返回137846528820。
testString: 'assert.strictEqual(latticePaths(20), 137846528820, "<code>latticePaths(20)</code> should return 137846528820.");'
Challenge Seed
function latticePaths(gridSize) {
// Good luck!
return true;
}
latticePaths(4);
Solution
// solution required