题解 | #斐波那契数列#
斐波那契数列
https://www.nowcoder.com/practice/aa8ffe28ec7c4050b2aa8bc9d26710e9
function fibonacci(n) {
if(n === 1 || n === 2) {
return 1
}
let a = 1;
let b = 1;
let c = 1
for(let i = 3;i<=n;i++) {
a = b
b = c
c = a + b
}
return c
}
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