Assume that x is a char variable has been declared and already given a value. Write an expression whose value is true if and only if x is alphanumeric, that is either a letter or a decimal digit.

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Assume that x is a char variable has been declared and already given a value. Write an expression whose value is true if and only if x is alphanumeric, that is either a letter or a decimal digit.

LANGUAGE: JAVA

CHALLENGE:

Assume that x is a char variable has been declared and already given a value. Write an expression whose value is true if and only if x is alphanumeric, that is either a letter or a decimal digit.

SOLUTION:


(x>='A' && x<='Z') || (x>='a' && x<='z') || (x>='0' && x<='9')

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