How can I round down a number in JavaScript? math.round() doesn’t work because it rounds it to the nearest decimal. I’m not sure if there is a better way of doing it other than breaking it apart at the decimal point at keeping the first bit. There must be… 12 Answers 12
So I am trying to figure out how to take a range of numbers and scale the values down to fit a range. The reason for wanting to do this is that I am trying to draw ellipses in a java swing jpanel. I want the height and width of each ellipse to be in … Read more
For example, int result; result = 125/100; or result = 43/100; Will result always be the floor of the division? What is the defined behavior? 6 Answers 6
Python’s math module contain handy functions like floor & ceil. These functions take a floating point number and return the nearest integer below or above it. However these functions return the answer as a floating point number. For example: import math f=math.floor(2.3) Now f returns: 2.0 What is the safest way to get an integer … Read more
This question already has answers here: Closed 11 years ago. Possible Duplicates: Statistics: combinations in Python counting combinations and permutations efficiently Project euler problem in python (problem 53) I’m looking to see if built in with the math library in python is the nCr (n Choose r) function: I understand that this can be programmed … Read more
The following code does work how I need it to, but it’s ugly, excessive or a number of other things. I’ve looked at formulas and attempted to write a few solutions, but I end up with a similar amount of statements. Is there a type of math formula that would benefit me in this instance … Read more
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Stack Overflow. Closed 4 years ago. Improve this question It seems that many projects slowly come upon a need to do matrix math, and fall into the trap … Read more
I need to generate a uniformly random point within a circle of radius R. I realize that by just picking a uniformly random angle in the interval [0 … 2π), and uniformly random radius in the interval (0 … R) I would end up with more points towards the center, since for two given radii, … Read more
What is the most efficient way given to raise an integer to the power of another integer in C? // 2^3 pow(2,3) == 8 // 5^5 pow(5,5) == 3125 19 Answers 19
Imagine two positive integers A and B. I want to combine these two into a single integer C. There can be no other integers D and E which combine to C. So combining them with the addition operator doesn’t work. Eg 30 + 10 = 40 = 40 + 0 = 39 + 1 Neither … Read more
