Problem 1.

input integer and output sum of digits in the integer.

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Problem 2.

Pyramid of ABCDE ðŸ™‚

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Problem 3.

Occurrence of string in a text from file.

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Problem 4.

Reading a text file

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Problem 5.

Writing to a text file

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Problem 6.

Decimal to Binary convertor

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Problem 7.

Frequency of elements in an array.

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