Absolute difference as long
Easy
Java
Data Types
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Problem Statement
Task: return absolute difference between two ints as a long (avoid overflow).
Input Format
Two integers a and b.
Output Format
A long value: absolute difference between a and b.
Example
2147483647 - (-2147483648)
4294967295
Constraints
• a and b are valid integers
• Must avoid integer overflow
• Must avoid integer overflow
Concept Explanation
If we subtract directly using int, overflow can happen.
So we first convert both numbers to long, then subtract,
and finally take absolute value.
So we first convert both numbers to long, then subtract,
and finally take absolute value.
Step-by-Step Explanation
1.Read integers a and b.
2.Convert both to long:
• long x = a
• long y = b
3.Compute diff = x - y.
4.If diff < 0, make it positive (-diff).
5.Return diff.
2.Convert both to long:
• long x = a
• long y = b
3.Compute diff = x - y.
4.If diff < 0, make it positive (-diff).
5.Return diff.
Concept Explanation
If we subtract directly using int, overflow can happen.
So we first convert both numbers to long, then subtract,
and finally take absolute value.
So we first convert both numbers to long, then subtract,
and finally take absolute value.
Step-by-Step Explanation
1.Read integers a and b.
2.Convert both to long:
• long x = a
• long y = b
3.Compute diff = x - y.
4.If diff < 0, make it positive (-diff).
5.Return diff.
2.Convert both to long:
• long x = a
• long y = b
3.Compute diff = x - y.
4.If diff < 0, make it positive (-diff).
5.Return diff.
Input / Output Format
Input Format
Two integers a and b.
Output Format
A long value: absolute difference between a and b.
Constraints
• a and b are valid integers
• Must avoid integer overflow
• Must avoid integer overflow
Examples
Input:
2147483647 - (-2147483648)
Output:
4294967295
Example Solution (Public)
static long absDiff(int a,int b){long x=a;long y=b;long d=x-y;return d<0?-d:d;}
Official Solution Code
static long absDiff(int a,int b){long x=a;long y=b;long d=x-y;return d<0?-d:d;}
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