Difference between revisions of "CSC111 Lab 6 2018"
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[[User:Thiebaut|D. Thiebaut]] ([[User talk:Thiebaut|talk]]) 12:27, 4 March 2018 (EST) | [[User:Thiebaut|D. Thiebaut]] ([[User talk:Thiebaut|talk]]) 12:27, 4 March 2018 (EST) | ||
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This lab deals, once again, with functions. Many functions, some receiving no parameters, some receiving several parameters, some returning nothing, some returning values. | This lab deals, once again, with functions. Many functions, some receiving no parameters, some receiving several parameters, some returning nothing, some returning values. | ||
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;Some explanations: | ;Some explanations: | ||
: When you do not provide a parameter to ''split()'', it splits on groups of ''whitespace'' characters. Whitespace characters are the space, the return character ('\n'), and the tab character. | : When you do not provide a parameter to ''split()'', it splits on groups of ''whitespace'' characters. Whitespace characters are the space, the return character ('\n'), and the tab character. | ||
| − | + | if you split on a space ' ' and the string has long groups of spaces, then you will get a list with many empty strings. In such cases it is best to not provide anything an split on whitespace. | |
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==Problem== | ==Problem== | ||
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| − | =Problem | + | =Problem 13= |
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Write a function called '''listFirstWords()''' that receives a list of sentences (strings with space-separated words), and returns a list of all the first words of each sentence. | Write a function called '''listFirstWords()''' that receives a list of sentences (strings with space-separated words), and returns a list of all the first words of each sentence. | ||
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[[Image:QuestionMark5.jpg|right|120px]] | [[Image:QuestionMark5.jpg|right|120px]] | ||
| − | :* Put your function '''listFirstWords()''' in a file called | + | :* Put your function '''listFirstWords()''' in a file called lab6_13.py, and submit it on Moodle in the Lab 6 section. If your function listFirstWords() uses other functions you have created, such as '''firstWord.py''', make sure you include them in your program as well! Do not '''call''' your function |
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| − | <showafterdate after="20180310 06:00> | + | </onlydft> |
| + | <showafterdate after="20180310 06:00" before="20180601 00:00"> | ||
=Solution Program= | =Solution Program= | ||
Latest revision as of 12:57, 1 June 2018
D. Thiebaut (talk) 12:27, 4 March 2018 (EST)
<showafterdate after="20180310 06:00" before="20180601 00:00">
Solution Program
# lab6Solution.py # D. Thiebaut def bar(): print( 30 * '#' ) def bar2( numChar ): print( numChar * '#' ) def bar3( numChar, ch ): print( numChar * ch ) def bar4( numLines, numChar, ch ): for i in range( numLines ): bar3( numChar, ch ) def square( x ): return x * x def cube( x ): # return x * x * x return square( x ) * x def sumSquareCube( x ): return square( x ) + cube( x ) def firstOf( list1 ): return list1[0] def firstWord( string ): words = string.split() return words[0] def listFirstWords( paragraph ): lines = paragraph.split( "\n" ) first = [ ] for line in lines: first.append( firstWord( line ) ) return first def main(): bar() bar2( 10 ) bar2( 1 ) bar2( 5 ) bar3( 6, 'a' ) bar3( 1, '#' ) bar3( 5, '-o' ) for i in range( 1, 5 ): bar3( i, '+' ) symbols = [ '#', '+', 'o', '$' ] for i in range( len( symbols ) ): bar3( i+1, symbols[i] ) bar4( 3, 10, '#' ) for i in range( 1, 5 ): print( "square(", i, ")=", square(i) ) print( "sumSquareCube(", 3, ")=", sumSquareCube( 3 ) ) farm = ["dog", "hen", "pig", "duck" ] animal = firstOf( farm ) print( "first animal = ", animal ) word = firstWord( "hello there CSC111!" ) print( "first word=", word ) sentence = " the quick red fox " word = firstWord( sentence ) print( "first word=", word ) parag = """Anna class of 18 Lujun class of 17 Vasanta class of 20""" students = listFirstWords( parag ) print( "students = ", students ) main()
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