Task: Sort the HashMap By Values.
Topic: HashMap

Task: Take a String in LinkedList unless the user puts an integer, Print the index number of vowel in ArrayList.
Programming Language: Java
Topic: ArrayList, LinkedList

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Task: Ask the user to enter a number until and unless user enter a correct Strong number.
Programming Language:Java

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Task: Ask the user to enter a number until and unless user enter a correct Armstrong number.
Programming Language:Java

Task: Ask the user to enter a number until and unless, user enter a correct factorial number
Programming Language:Java

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Here is the Simple java Program-Alarm