Difference between revisions of "CSC111 Exercises with For-Loops: Repeating things"

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--[[User:Thiebaut|D. Thiebaut]] ([[User talk:Thiebaut|talk]]) 10:17, 28 February 2014 (EST)
 
--[[User:Thiebaut|D. Thiebaut]] ([[User talk:Thiebaut|talk]]) 10:17, 28 February 2014 (EST)
 
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<bluebox>
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This page contains exercises on for-loops and short videos presenting solutions for each exercise.
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</bluebox>
 
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=Exercise 1=
 
=Exercise 1=
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write a program that will ask the user for a number and will indicate if this number is in the array or not
 
write a program that will ask the user for a number and will indicate if this number is in the array or not
 
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<br /><center><videoflash>_FZEwCOyQvA</videoflash></center>
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=Exercise 2=
 
=Exercise 2=
 
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write a program that will ask the user for a word and will indicate '''if this word is in the array''' or not
 
write a program that will ask the user for a word and will indicate '''if this word is in the array''' or not
 
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<br /><center><videoflash>y1dv69bSSwk</videoflash></center>
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=Exercise 3=
 
=Exercise 3=
 
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<br />
Same as Exercise 1, but this time the program returns the '''number of times''' the user choice appears in the array.
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Same as Exercise 1, but this time the program returns the '''number of times''' the user's choice appears in the array.
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<br /><center><videoflash>1VXPBeYBiuo</videoflash></center>
 
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=Exercise 4=
 
=Exercise 4=
 
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Given the array sound, and an integer input by the user, your program will return the location of the '''first''' occurrence of the user's number.
 
Given the array sound, and an integer input by the user, your program will return the location of the '''first''' occurrence of the user's number.
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<br /><center><videoflash>TNfI1tO70CE</videoflash></center>
 
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=Exercise 5=
 
=Exercise 5=
 
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Given the array sound, and an integer input by the user, your program will return the location of the '''last''' occurrence of the user's number.
 
Given the array sound, and an integer input by the user, your program will return the location of the '''last''' occurrence of the user's number.
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<br /><center><videoflash>YF9dxRkY4E8</videoflash></center>
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<!--source lang="python">
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sound = [1, 10, 3, 10, 3, 10, 2 ]
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x = int( input( "Enter an integer: " ) )
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pos = -1
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for i in range( len( sound )-1, -1, -1 ):
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  if sound[i] == x:
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      pos = 1
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      break
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if pos != -1:
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  print( "Found %d at position %d" % (x, pos ) )
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else:
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  print( "%d not found!" %x )
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</source-->
 
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Latest revision as of 22:54, 28 February 2014

--D. Thiebaut (talk) 10:17, 28 February 2014 (EST)




This page contains exercises on for-loops and short videos presenting solutions for each exercise.


Exercise 1


Given the array sound

sound = [ 1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 9, 1, 1, 0, 0]

write a program that will ask the user for a number and will indicate if this number is in the array or not



Exercise 2


Given the array words

words = [ "hello", "there!", "there", "will", "be", "a", "big", "snow", "storm", "on", "Monday" ]

write a program that will ask the user for a word and will indicate if this word is in the array or not



Exercise 3


Same as Exercise 1, but this time the program returns the number of times the user's choice appears in the array.



Exercise 4


Given the array sound, and an integer input by the user, your program will return the location of the first occurrence of the user's number.



Exercise 5


Given the array sound, and an integer input by the user, your program will return the location of the last occurrence of the user's number.