Lesson 1/6 · Graduation exam preparationNot startedhigh School~150 min

Strings

Tasks with text and first complete programs: a digit sum, a cipher, palindromes, a birth number, BMI and a quadratic equation.

After this lesson you'll be able to:

  • Walk through a string with a loop and use slices
  • Use string methods: `count`, `split`, `lower`, `isdigit`
  • Handle bad input and split a program into functions
  • Print exactly what the task asks for - the tests compare the output line by line (trailing spaces do not matter). Write any prompt you like in `input("…")`; the tests ignore it.

Theory (PDF)

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Examples to try

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Examples for this lesson are being prepared.

Exercises

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  1. Write a programDigit sumBasic10 XP
  2. Write a programHalf pyramidBasic10 XP
  3. Write a programBMI calculatorElementary20 XP
  4. Write a programFinding a characterBasic10 XP
  5. Small projectBirth numberIntermediate30 XP
  6. Write a programThe Fibonacci sequenceElementary20 XP
  7. Write a programMind readerIntermediate30 XP
  8. Algorithmic problemGreatest common divisorElementary20 XP
  9. Write a programA number inside a random numberElementary20 XP
  10. Write a programCaesar cipherElementary20 XP
  11. Write a programPalindromeBasic10 XP
  12. Write a programCharacters and wordsElementary20 XP
  13. Write a programQuadratic equationElementary20 XP
  14. Small projectRock, paper, scissorsElementary20 XP
  15. Write a programPassword checkElementaryOptional20 XP
  16. Predict the outputString slicesElementaryOptional20 XP

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