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Simple types and strings (2) P16327
You have to program several functions. In each case, few lines of code are enough. Warning: do not use the split string method.
- Write a function um_count(s) that given an string s returns the number of times character u is followed by character m in string s.
- Write an integer function word_count(s) that returns the number of words in string s. We assume all characters of s are letters and spaces.
- Write a function kth_word(s, k) that given a string s and an integer k≥ 1 returns the kth word in string s. If s has less than k words it returns the empty string. We assume all characters of s are letters and spaces.
- Write a function suc_word(s) that given a string s and returns the first word in string s that has some uppercase letter. If all the letters in s are lowercase it returns the empty string. We assume all characters of s are letters and spaces.
- Write a function drawA(n) that given an odd integer n≥ 3 prints a letter A of size n formed with symbol *.
Scoring
Every function counts 20 points.
Sample session
>>> um_count("Qui invenit amicum invenit thesauruM") 1 >>> word_count("Alea iacta est") 3 >>> kth_word("Alea iacta est", 3) est >>> suc_word("qui invenit amiCum invenit thesauruM") amiCum >>> drawA(5) * * * ***** * * * *