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How to isolate digits in a long variable for JAVA?
long 122343434434
how to isolate the 2nd number?

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  • Latest Post Latest Post by Taywin
Member Avatar for Taywin

One way to do is to keep dividing it by 10 until you get to the digit number you want?

Edited by Taywin because: n/a
Member Avatar for wangfz

how do i do that to find the second number though?

Member Avatar for Taywin 
long anumber = 122335574;
while (anumber>99) {
  anumber /= 10;
}
int seconddigit = anumber % 10;

Another way to do it is to convert the number to String and then use the charAt() method of the String. Then convert it back to integer...

long anumber = 122335574;
Long lnumber = new Long(anumber);
String snumber = lnumber.toString();
int seconddigit = snumber.charAt(1)-48;

PS: Both ways don't guarantee when the number is less than 10.
The string way doesn't guarantee when the number is negative. However, could easily be fixed by converting the number to positive first.

Edited by Taywin because: n/a
commented: Solid post :) +14
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