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Remove live code & console.log, leave examples as comments (ProjectEuler, Recursive).
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@ -6,7 +6,7 @@ How many such routes are there through a 20×20 grid?
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// A lattice path is composed of horizontal and vertical lines that pass through lattice points.
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const latticePath = (gridSize) => {
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export const latticePath = (gridSize) => {
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let paths
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for (let i = 1, paths = 1; i <= gridSize; i++) {
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paths = paths * (gridSize + i) / i
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@ -14,4 +14,6 @@ const latticePath = (gridSize) => {
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// The total number of paths can be found using the binomial coefficient (b+a)/a.
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return paths
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}
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console.log(latticePath(20)) // output = 137846528820
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// > latticePath(20))
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// 137846528820
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