我寫這篇斐波那契數列的Javascript代碼有什麼問題？

Question

Fibonacci序列代碼放在這裏

function fibonnica(g) { 
 
    var result, n; 
 
    if (g == 1) { 
 
    return g; //if enterd no is 1 then 1 that is very apparent 
 
    } else { 
 
    result = g; //7 
 
    n = g - 1; //6 
 
    while (n > 0) { 
 
     result *= n ///7*6 second time 7*5 and so on.. 
 
     n = n - 1; //n=5 
 
    } 
 
    return result; 
 
    } 
 
} 
 
console.log(fibonnica(7)); //why 7 is the output

請只告訴錯誤不解決，我想強迫自己

Answer 1

你需要切換條件，檢查更大的數量，小於數字。

while (n > 0) { 
//  ^

function fibonnica(g) { 
 
    var result, n; 
 
    if (g == 1) { 
 
     return g; 
 
    } else { 
 
     result = g; 
 
     n = g - 1; 
 
     while (n > 0) { 
 
      result *= n; 
 
      n = n - 1; 
 
     } 
 
     return result; 
 
    } 
 
} 
 
console.log(fibonnica(7)); // 5040