Meaning of 阶乘
阶乘 means factorial; product of consecutive integers from 1 to n. Pronounced jiē chéng.
- factorial; product of consecutive integers from 1 to n
Definitions & Examples
55
de的
jiē阶
chéng乘
shì是
1201
jí2
50
，
=即
1205
!
=
1
2
0
。
The factorial of 5 is 120, i.e., 5! = 120.
Jì计
suàn算
pái排
liè列
zǔ组
hé合
shí时
jīng经
cháng常
yào要
yòng用
dào到
jiē阶
chéng乘
。
Factorials are often used when calculating permutations and combinations.
Guī规
dìng定
00
de的
jiē阶
chéng乘
děng等
yú于
11
，
jí即
00
!
=
1=
1
。
By definition, the factorial of 0 equals 1, i.e., 0! = 1.
Qiú求
nn
de的
jiē阶
chéng乘
de的
suàn算
fǎ法
fù复
zá杂
dù度
shì是
OO
(
nn
)
。
The time complexity of an algorithm to compute the factorial of n is O(n).