Now, more and more laptops with Google Chrome OS systems are constantly on the market for Windows laptops, and Samsung has recently launched its second generation of Chromebook notebooks, as well as the chrome system. The Korean electronics giant's Chromebook 2 notebooks are divided into 11-inch and
/***//**
* Fractionserial. Java
* There is a fractional sequence: 2/1, 3/2, 5/3, 8/5, 13/8, 21/13...
* Calculate the sum of the first 20 items of the series.
* @ Author Deng Chao (codingmouse)
* @ Version 0.2
* Development/test en
# Include
}/* The numerator behind the score is equal to the numerator plus the denominator of the previous score, and the denominator of the subsequent score is equal to the numerator with the previous score */
There is a fractional sequence: 2/1, 3/2, 5/3, 8/5, 13/8, 21
There is a fractional sequence of 2/1 + 3/2 + 5/3 + 8/5 + 13/8 +... Find the sum of the first 20 items of the series.Program:
# Include
Output result: 32.660261 Press any key to continue
C language: There is a score sequence: 2/1 + 3/2 + 5/3 + 8/5 + 13/8 +... Find the sum of the first 20 items in this seriesProgram:
# Include
Output result: 32.660261 Press any key to continue
Vector used: # include # Include Using namespace STD;
Int fenshu (INT );
Int main ()
{
Double sum = 0, sum1 = 0;
For (INT I = 2; I {
Sum1 + = fenshu (I );
}
Sum = sum1 + 0.5;
Cout Return 0;
}
Int fenshu (INT index)
{
Double temp;
Vector A. Reserve (3 );
A. At (0) = 1;
A. at (1) = 2;
For (INT I = 2; I {
A. insert (A.
In order to omit the space and make it visible to the operator who manually fills in the paper, the volume number on the card of the materials shelf is determined to be classified and sorted, as shown in
A-3, A-4, A-5, A-8 forming A-3 ~ 5, 8, etc.
The following code uses a few auxiliary list
/// /// Similar to 1, 2, 3
number is 383, the difference between the two numbers is: 383-357=26,26 can be divisible by 13, therefore, 383357 must be divisible by 13.This method also applies to judging whether a number can be divisible by 7 or 11. such as: 283679 of the last three digits is 679, the last three digits of the previous number is composed of 283,679-283=396,396 can be divisible by 11, therefore, 283679 must be divisible
[CPP]View Plaincopyprint?
Nsmutablearray *arr = [[Nsmutablearray alloc] init];
For (int i = 0; i
[Arr addobject:[nsstring stringwithformat:@"damo%d", I]];
}
NSLog (@"%@", arr);
Nsmutablearray *bigarr = [[Nsmutablearray alloc] initwithcapacity:1];
Nsmutablearray *smallarr = nil;
For (int i = 0; i
if (i% 3 = = 0) {
//Just read 0 3 6 9 12 to open up space to store the next three ele
/**/
/// /// The rule for a column number is as follows: 1, 1, 2, 3, 5, 8, 13, 21, and 34 calculate the number of 30th digits, which is implemented using a recursive algorithm. (C # language) /// /// ///
Public
Int
Getnumberatpos (
Int
Pos)
{ If (Pos = 0 | Pos = 1 ) {Return1;} Int Res = Getnumberatp
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