Java reverse an int value without using array

I am not clear about your Odd number. The way this code works is (it is not a Java specific algorithm) Eg. input =2345 first time in the while loop rev=5 input=234 second time rev=5*10+4=54 input=23 third time rev=54*10+3 input=2 fourth time rev=543*10+2 input=0 So the reversed number is 5432. If you just want only … Read more

How to convert integer to string in C?

Use sprintf(): All numbers that are representable by int will fit in a 12-char-array without overflow, unless your compiler is somehow using more than 32-bits for int. When using numbers with greater bitsize, e.g. long with most 64-bit compilers, you need to increase the array size—at least 21 characters for 64-bit types.

Declaring an unsigned int in Java

Java does not have a datatype for unsigned integers. You can define a long instead of an int if you need to store large values. You can also use a signed integer as if it were unsigned. The benefit of two’s complement representation is that most operations (such as addition, subtraction, multiplication, and left shift) are identical on a binary level for … Read more

How can I properly compare two Integers in Java?

I know that if you compare a boxed primitive Integer with a constant such as: a will automatically be unboxed and the comparison will work. However, what happens when you are comparing two boxed Integers and want to compare either equality or less than/greater than? Will the above code result in checking to see if they are the … Read more

How to convert an int to string in C?

EDIT: As pointed out in the comment, itoa() is not a standard, so better use sprintf() approach suggested in the rivaling answer! You can use itoa() function to convert your integer value to a string. Here is an example: If you want to output your structure into a file there is no need to convert any value beforehand. You can just use … Read more

Generating random whole numbers in JavaScript in a specific range?

There are some examples on the Mozilla Developer Network page: Here’s the logic behind it. It’s a simple rule of three: Math.random() returns a Number between 0 (inclusive) and 1 (exclusive). So we have an interval like this: Now, we’d like a number between min (inclusive) and max (exclusive): We can use the Math.random to get the correspondent in the [min, max) interval. But, first we … Read more

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