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27 lines
499 B
JavaScript
27 lines
499 B
JavaScript
/*
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* You are climbing a stair case. It takes n steps to reach to the top.
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* Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top?
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*/
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const climbStairs = (n) => {
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let prev = 0
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let cur = 1
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let temp
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for (let i = 0; i < n; i++) {
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temp = prev
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prev = cur
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cur += temp
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}
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return cur
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}
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const main = () => {
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const number = 5
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console.log('Number of ways to climb ' + number + ' stairs in ' + climbStairs(number))
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}
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// testing
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main()
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