CODEWITHSUNDEEP
java
Yhom Torke
Yhom Torke

Reputation: 161

how to store previous number in Java?

hi I'm new to java and having trouble solving this. 

void setNumber(int inputNumber)
{
    int currentNumber = inputNumber;
    int previousNumber = ??????????

}

so if inputNumber is " 2 " , then currentNumber should be " 2 " and I want to change inputNumber to something else but I want previousNumber to be " 2 " and on and on, previousNumber to have one step before currentNumber's new value. how can I do this?

Thanks!

Upvotes: 0

Views: 6628

Answers (2)

n00begon
n00begon

Reputation: 3492

Just store currentNumber in previousNumber before you overwrite it with the new value.

int previousNumber = currentNumber;
int currentNumber = inputNumber;

First the previousNumber is overwritten by the currentNumber

input = 3
previous = 2
current = 2

Then the current gets the new number from input number

input = 3
previous = 2
current = 3

You now have a variable with current's previous value

Upvotes: 7

Parth Soni
Parth Soni

Reputation: 11648

Use Array of currentNumber int[] currentNumber so the current index will store the current number whereas the before indexes will point to the previously stored numbers

Upvotes: 0

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