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Pitney Bowes
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posted on 15 Apr 2024
Count the number of letters in a given string
Iterate through each character in the string and check if it is a letter
Increment a counter for each letter found
Return the total count of letters
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posted on 30 Mar 2022
I applied via Company Website and was interviewed in Mar 2022. There were 3 interview rounds.
Aptitude test was basic. They ask basic questions in maths, reasoning, english and programming.
Overloading is having multiple methods with the same name but different parameters. Overriding is replacing a method in a subclass.
Overloading is used to provide different ways to call a method with different parameters
Overriding is used to change the behavior of a method in a subclass
Overloading is resolved at compile-time while overriding is resolved at runtime
Overloading is done within the same class while overridin...
Storage class specifier is a keyword used in C programming language to define the scope and lifetime of a variable.
There are four storage class specifiers in C: auto, register, static, and extern.
Auto variables are created when a function is called and destroyed when the function returns.
Register variables are stored in CPU registers for faster access.
Static variables retain their value between function calls.
Extern va...
posted on 6 Nov 2018
The question asks to count the number of occurrences of each character in a given string, ignoring case and wild card characters.
Convert the string to lowercase to ignore case.
Remove any wild card characters from the string.
Create an array of size 26 to store the count of each character.
Iterate through each character in the string and increment the count in the array accordingly.
Return the array of counts as the result
HashMap is used for efficient key-value pair storage and retrieval.
HashMap provides constant time complexity for basic operations like get and put.
It allows storing unique keys and their corresponding values.
HashMap is suitable for scenarios where fast lookup is required.
Other collections like ArrayList or LinkedList have different use cases and performance characteristics.
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