numbers

I want to generate 10000 integer random numbers between 0 and 10^12. Usually, the code would look like this: x <- sample(0:1000000000000,10000,replace=T) But I get following error message: Error in 0:1000000000000 : result would be too long a vector Is there a more memory efficient method that doesn't have to put 10^12 integers in a vector just to get a sample of size 10000? If not, is there a way to increase the max size of the vector? I'm working on a 64bit OS with 12GB of free RAM. PascalVKooten The real problem lies in the fact that you cannot store the sequence of 0:10^12 into memory. By

I'm looking to round values like 2.3913 -> 2.5 4.6667 -> 4.5 2.11 -> 2 How can I manage this in SQL? Thanks SELECT ROUND(2.2 * 2, 0) / 2 gets you to the nearest .5 来源： https://stackoverflow.com/questions/9873990/round-to-5-or-1-0-in-sql

This question already has an answer here: Representing big numbers in source code for readability? 5 answers Making large constants in C source more readable? 8 answers Imagine I have the code: vector<int> temp = vector<int>(1 000 000 000); The above will not compile as the compiler will complain about the spaces. Is it possible to indicate to C++ to ommit those spaces when compiling, or otherwise make the number easier to read? Try digit separator: int i = 1'000'000'000; This feature is introduced since C++14 . It uses single quote ( ' ) as digit separator. Also see: Why was the space

Let's say I have a string of numbers separated by spaces and I want to return the highest and lowest number. How could that best be done in JS using a function? Example: highestAndLowest("1 2 3 4 5"); // return "5 1" I would like the both numbers to be returned in a string. The lowest number first followed by a space then the highest number. Here is what I have so far: function myFunction(str) { var tst = str.split(" "); return tst.max(); } You can use Math.min and Math.max , and use them in an array to return the result, try: function highestAndLowest(numbers){ numbers = numbers.split(" ");

I searched and only found this one related to my question, but not exactly the same, as I'm using toFixed rather than toPrecision. Why does toPrecision return a String? Here is my code var oldv = parseFloat(document.getElementById('total').textContent).toFixed(2); alert(typeof oldv); // returns string var testv = parseInt(document.getElementById('total').textContent); alert(typeof testv); // returns number I need further math steps, so string type messed up... Why? How to solve? TIA As mentioned in docs, toFixed returns A string representing the given number using fixed-point notation In case