freeCodeCamp/curriculum/challenges/arabic/08-coding-interview-prep/project-euler/problem-15-lattice-paths.arabic.md

id	challengeType	title	videoUrl	localeTitle
5900f37b1000cf542c50fe8e	5	Problem 15: Lattice paths

Description

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Instructions

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Tests

tests:
  - text: ''
    testString: 'assert.strictEqual(latticePaths(4), 70, "<code>latticePaths(4)</code> should return 70.");'
  - text: ''
    testString: 'assert.strictEqual(latticePaths(9), 48620, "<code>latticePaths(9)</code> should return 48620.");'
  - text: ''
    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