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I am trying to convert the following Java code into swift, but I do not know about this data structure new (int start, int end)[input. length], any guidance would be appraciated.
public override void collection_entries(int[] input)
{
var ranges = new (int start, int end)[input.length];
}
In swift, you should use a Range().
let start = 0
let end = 6
var ranges = Range(start...end)[input.count]
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I don't know why my defined function is not working smoothly.
in this I am trying to build a function to convert a binary number to a decimal number
public class binarrytodec {
public static void bintodec(int n){
int p=0;
int dec=0;
while(n>0){
int ld=n%10;
dec = dec + (ld*(int)Math.pow(2, p));
p++;
n=n%10;
}
System.out.print(dec);
}
public static void main(String args[]) {
bintodec(1110001);
}
}
% is not division, it's a remainder operation - it shows how much is left after integer division. 1 % 10 == 1. Thus your n is never becoming 0, and your code enters an infinite loop.
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I have a class with data member:
private static final int DEFAULT_SIZE = 10;
private Stack<String> myStack = new Stack<>();
// want to add more element to the stack based on demand - but add incremental demand
public void addCapacity(int incremental) {
int diff = incremental - DEFAULT_SIZE;
myStack.forEach((diff) -> {
myStack.push("something");
});
}
The idea was to see if this forms a use case for lambda functions. But it will not allow me as it is expecting a boolean in place of diff. Is lambda forEach a use-case here?
Since Stack extends Vector, if you wanted to increase the capacity, then you could have used ensureCapacity (in Vector)
myStack.ensureCapacity(minCapacity);
If you wanted to do myStack.push("something") diff times, then you could have used:
IntStream.range(0, diff).forEach(i -> myStack.push("something"));
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I have the below one line of code:
variableDoubleValue = ((10*variableDoubleA) + (6.25*variableDoubleB) – (5*variableByteC) + 5);
How can I write it in a Java understandable code?
From what I infer from your question, you want a Java-language based variable declaration and assignment.
Well, if this is the case, then the result will be :-
//public class MathemathicalExpression{
// public static void main(String[] args){
// Double A=some_value,B=some_value,Value=0; considering A,B and Value to be of type Double
// Byte C=some_value; considering C to be of type Byte.
Value = 10 * A + 6.25 * B - 5 * C + 5;
// }
//}
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What is the equivalent Java for this PHP code?
//print string plus/with variable
$mystring = "this is string " .$string
//print sum one + two
$count = $one + $two
//print sum one*two
$count = $one * $two
It should be like :
String mystring= "this is string " + string; // here `string` is aloso String object
/*
* if count ,one and two all of them are int
*/
int count = one + two;
int count = one * two;
But i would suggest to learn basics of java before starting android. As you know php it will not take long to learn java syntax.
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public static int secret(int value) {
int prod = 1;
for(int i =1; i <= 3; i++) {
prod = prod * value;
}
return prod;
}
What would be the output of:
System.out.println("First secret call: " + secret(5));
System.out.println("Second secret call: " + (2 * secret(6)));
and what does the method secret do
The output would be 125 and then 432. The method, "secret", cubes the number passed into it.
everything fits in a very small screenshot in two windows... try it, you will see it is fun, like playing lego but with more magic!!!