Convert char digit to int
Easy
Java
Data Types
24 views
Problem Statement
Task: given a digit character '0'..'9', return its integer value.
Input Format
A character ch ('0' to '9').
Output Format
An integer: numeric value of the digit.
Example
'7'
7
Constraints
• ch is between '0' and '9'
• Use basic character logic
• Use basic character logic
Concept Explanation
In Java, digit characters are stored using ASCII/Unicode values.
To get the integer value, subtract '0' from the character.
To get the integer value, subtract '0' from the character.
Step-by-Step Explanation
1.Read character ch.
2.Compute value = ch - '0'.
3.Return value.
2.Compute value = ch - '0'.
3.Return value.
Concept Explanation
In Java, digit characters are stored using ASCII/Unicode values.
To get the integer value, subtract '0' from the character.
To get the integer value, subtract '0' from the character.
Step-by-Step Explanation
1.Read character ch.
2.Compute value = ch - '0'.
3.Return value.
2.Compute value = ch - '0'.
3.Return value.
Input / Output Format
Input Format
A character ch ('0' to '9').
Output Format
An integer: numeric value of the digit.
Constraints
• ch is between '0' and '9'
• Use basic character logic
• Use basic character logic
Examples
Input:
'7'
Output:
7
Example Solution (Public)
static int digitToInt(char c){return c-'0';}
Official Solution Code
static int digitToInt(char c){return c-'0';}
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