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斐波那契數(shù)列的理解
斐波那契數(shù)列的理解.png - 斐波那契數(shù)列的理解.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>05函數(shù)練習(xí)</title>
<script>
//求一個(gè)斐波那契數(shù)列,12---144
//1 1 2 3 5 8 13 21 34 55 89 144
function getFib(num){
var num1=1;
var num2=1;
var sum=0;
for(var i=3;i<=num;i++){//(當(dāng)i=3即第三個(gè)數(shù))
sum=num1+num2;
num1=num2;//1(當(dāng)i=3即第三個(gè)數(shù))
num2=sum;//2
}
return sum;
}
console.log(getFib(12));
</script>
</head>
<body>
</body>
</html>
