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Why it's showing error, when I enter just 5 digit number in long data type?
Numbers starting with 0 are interpreted as octal numbers in Java, that are 8-based numbers. A 9 or 8 cannot appear in octal number, thus the warning.
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Given a circular, integer array nums, return the next greater number for every element in nums.
Input
[9,1,2,4,3,5,8]
Output
[-1,2,3,5,4,8,9]
In other words:
9->-1
1->2
2->3
4->5
3->4
5->8
8->9
I'm very confused how to solve this problem. Please help me.
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Write a Java program that keeps a number from the user and generates an integer between 1
and 7 and displays the name of the weekday.
Create a Strint array with all weekdays ({"Sunday", "Monday"...}) and than get the name by index like this:
int day = 2;
System.out.println(weekdays[day - 1]);//output Monday
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I had requirement to validate 5 digit String with - at third position.
For example i want to validate number like these 12-18 ,20-35,40-45.I need java string for the same
you can use the regex
^\d{2}-\d{2}$
to match , see the regex101 demo
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I am solving a problem for which i require to know the number of 1 bit's in a BigInteger.
Thanks in advance.
You can use .bitCount() on the BigInteger. Unless you need to solve it manually, in which case you can use normal Java bitwise operations.
Do x-or with 0. By this you will get the bits set as 1 wherever there was 1 in your original input. Then you can count the number of bits set in the output.
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I am trying to print this integer 12345679 like 1,234,68. I was trying to do like this.
System.out.println(count+" "+"$"+fm.format(NumberFormat.getNumberInstance(Locale.US).format(avg)));
How can I do this in java??
NumberFormat currencyInstance = NumberFormat.getCurrencyInstance(Locale.US);
currencyInstance.setMaximumFractionDigits(0);
System.out.println(currencyInstance.format(12345679));
Output: $12,345,679