1+(2+1/2!)+(3+1/3!)......+(20+1/20!)
- 仅用于或用于
sum=0.0
sub_sum=0.0
i=2
j=20
while(i<=20){
print(i)
sub_sum=1.0
j=1.0
while(j<=i){
print("j")
print(j)
print("sub_sum")
print(sub_sum)
sub_sum=j+sub_sum*(1/j)
j=j+1
}
sub=sum+sub_sum
i=i+1
}
print(sum)
但是我一次又一次地尝试使用它,但它一直得到错误的价格。
随着n=20
sapply(1:n, function(x) x+1/factorial(x)) %>% sum - 1
要么
sapply(1:n, function(x) x+1/prod(1:x)) %>% sum - 1
随着res = -1
(1)for循环:
tmp = 1
for (i in 1:n) {
tmp = tmp * i
res = res + i + 1/tmp
}
res
(2)while循环:
tmp = 1
i = 1
while (i <= n) {
tmp = tmp * i
res = res + i + 1/tmp
i = i + 1
}
res