Update 100+ Python challenging programming exercises.txt

Author: keith0062

100+ Python challenging programming exercises.txt

@@ -72,7 +72,9 @@ Question 3
 Level 1
 
 Question:
-With a given integral number n, write a program to generate a dictionary that contains (i, i*i) such that is an integral number between 1 and n (both included). and then the program should print the dictionary.
+With a given integral number n, write a program to generate a dictionary that contains (i, i*i) 
+such that is an integral number between 1 and n (both included). and then the program should print 
+the dictionary.
 Suppose the following input is supplied to the program:
 8
 Then, the output should be:
@@ -96,7 +98,8 @@ Question 4
 Level 1
 
 Question:
-Write a program which accepts a sequence of comma-separated numbers from console and generate a list and a tuple which contains every number.
+Write a program which accepts a sequence of comma-separated numbers from console and generate 
+a list and a tuple which contains every number.
 Suppose the following input is supplied to the program:
 34,67,55,33,12,98
 Then, the output should be:
@@ -161,7 +164,8 @@ The output of the program should be:
 18,22,24
 
 Hints:
-If the output received is in decimal form, it should be rounded off to its nearest value (for example, if the output received is 26.0, it should be printed as 26)
+If the output received is in decimal form, it should be rounded off to its nearest value 
+(for example, if the output received is 26.0, it should be printed as 26)
 In case of input data being supplied to the question, it should be assumed to be a console input. 
 
 Solution:
@@ -182,7 +186,8 @@ Question 7
 Level 2
 
 Question:
-Write a program which takes 2 digits, X,Y as input and generates a 2-dimensional array. The element value in the i-th row and j-th column of the array should be i*j.
+Write a program which takes 2 digits, X,Y as input and generates a 2-dimensional array. 
+The element value in the i-th row and j-th column of the array should be i*j.
 Note: i=0,1.., X-1; j=0,1,¡­Y-1.
 Example
 Suppose the following inputs are given to the program:
@@ -191,7 +196,8 @@ Then, the output of the program should be:
 [[0, 0, 0, 0, 0], [0, 1, 2, 3, 4], [0, 2, 4, 6, 8]] 
 
 Hints:
-Note: In case of input data being supplied to the question, it should be assumed to be a console input in a comma-separated form.
+Note: In case of input data being supplied to the question, it should be assumed to be a console 
+input in a comma-separated form.
 
 Solution:
 input_str = raw_input()
@@ -212,7 +218,8 @@ Question 8
 Level 2
 
 Question:
-Write a program that accepts a comma separated sequence of words as input and prints the words in a comma-separated sequence after sorting them alphabetically.
+Write a program that accepts a comma separated sequence of words as input and prints the words 
+in a comma-separated sequence after sorting them alphabetically.
 Suppose the following input is supplied to the program:
 without,hello,bag,world
 Then, the output should be:
@@ -232,7 +239,8 @@ Question 9
 Level 2
 
 Question£º
-Write a program that accepts sequence of lines as input and prints the lines after making all characters in the sentence capitalized.
+Write a program that accepts sequence of lines as input and prints the lines after making all 
+characters in the sentence capitalized.
 Suppose the following input is supplied to the program:
 Hello world
 Practice makes perfect
@@ -261,7 +269,8 @@ Question 10
 Level 2
 
 Question:
-Write a program that accepts a sequence of whitespace separated words as input and prints the words after removing all duplicate words and sorting them alphanumerically.
+Write a program that accepts a sequence of whitespace separated words as input and prints 
+the words after removing all duplicate words and sorting them alphanumerically.
 Suppose the following input is supplied to the program:
 hello world and practice makes perfect and hello world again
 Then, the output should be:
@@ -282,7 +291,9 @@ Question 11
 Level 2
 
 Question:
-Write a program which accepts a sequence of comma separated 4 digit binary numbers as its input and then check whether they are divisible by 5 or not. The numbers that are divisible by 5 are to be printed in a comma separated sequence.
+Write a program which accepts a sequence of comma separated 4 digit binary numbers as its input 
+and then check whether they are divisible by 5 or not. The numbers that are divisible by 5 are 
+to be printed in a comma separated sequence.
 Example:
 0100,0011,1010,1001
 Then the output should be:
@@ -308,7 +319,8 @@ Question 12
 Level 2
 
 Question:
-Write a program, which will find all such numbers between 1000 and 3000 (both included) such that each digit of the number is an even number.
+Write a program, which will find all such numbers between 1000 and 3000 (both included) such that 
+each digit of the number is an even number.
 The numbers obtained should be printed in a comma-separated sequence on a single line.
 
 Hints:
@@ -357,7 +369,8 @@ Question 14
 Level 2
 
 Question:
-Write a program that accepts a sentence and calculate the number of upper case letters and lower case letters.
+Write a program that accepts a sentence and calculate the number of upper case letters and 
+lower case letters.
 Suppose the following input is supplied to the program:
 Hello world!
 Then, the output should be:
@@ -409,7 +422,8 @@ Question 16
 Level 2
 
 Question:
-Use a list comprehension to square each odd number in a list. The list is input by a sequence of comma-separated numbers.
+Use a list comprehension to square each odd number in a list. The list is input by a 
+sequence of comma-separated numbers.
 Suppose the following input is supplied to the program:
 1,2,3,4,5,6,7,8,9
 Then, the output should be:
@@ -428,7 +442,8 @@ Question 17
 Level 2
 
 Question:
-Write a program that computes the net amount of a bank account based a transaction log from console input. The transaction log format is shown as following:
+Write a program that computes the net amount of a bank account based a transaction 
+log from console input. The transaction log format is shown as following:
 D 100
 W 200
 
@@ -467,7 +482,8 @@ Question 18
 Level 3
 
 Question:
-A website requires the users to input username and password to register. Write a program to check the validity of password input by users.
+A website requires the users to input username and password to register. Write a program to check 
+the validity of password input by users.
 Following are the criteria for checking the password:
 1. At least 1 letter between [a-z]
 2. At least 1 number between [0-9]
@@ -515,7 +531,9 @@ Question 19
 Level 3
 
 Question:
-You are required to write a program to sort the (name, age, height) tuples by ascending order where name is string, age and height are numbers. The tuples are input by console. The sort criteria is:
+You are required to write a program to sort the (name, age, height) tuples by ascending 
+order where name is string, age and height are numbers. The tuples are input by console.
+The sort criteria is:
 1: Sort based on name;
 2: Then sort based on age;
 3: Then sort by score.
@@ -551,7 +569,8 @@ Question 20
 Level 3
 
 Question:
-Define a class with a generator which can iterate the numbers, which are divisible by 7, between a given range 0 and n.
+Define a class with a generator which can iterate the numbers, which are divisible by 7, 
+between a given range 0 and n.
 
 Hints:
 Consider use yield
@@ -574,7 +593,8 @@ Question 21
 Level 3
 
 Question£º
-A robot moves in a plane starting from the original point (0,0). The robot can move toward UP, DOWN, LEFT and RIGHT with a given steps. The trace of robot movement is shown as the following:
+A robot moves in a plane starting from the original point (0,0). The robot can move toward 
+UP, DOWN, LEFT and RIGHT with a given steps. The trace of robot movement is shown as the following:
 UP 5
 DOWN 3
 LEFT 3
@@ -622,7 +642,8 @@ Question 22
 Level 3
 
 Question:
-Write a program to compute the frequency of the words from the input. The output should output after sorting the key alphanumerically. 
+Write a program to compute the frequency of the words from the input. The output should output 
+after sorting the key alphanumerically. 
 Suppose the following input is supplied to the program:
 New to Python or choosing between Python 2 and Python 3? Read Python 2 or Python 3.
 Then, the output should be:
@@ -677,8 +698,10 @@ Question 24
 Level 1
 
 Question:
-    Python has many built-in functions, and if you do not know how to use it, you can read document online or find some books. But Python has a built-in document function for every built-in functions.
-    Please write a program to print some Python built-in functions documents, such as abs(), int(), raw_input()
+    Python has many built-in functions, and if you do not know how to use it, you can read 
+    document online or find some books. But Python has a built-in document function for every 
+    built-in functions. Please write a program to print some Python built-in functions documents,
+    such as abs(), int(), raw_input()
     And add document for your own function
 
 Hints:
@@ -733,7 +756,8 @@ Question:
 Define a function which can compute the sum of two numbers.
 
 Hints:
-Define a function with two numbers as arguments. You can compute the sum in the function and return the value.
+Define a function with two numbers as arguments. You can compute the sum in the function 
+and return the value.
 
 Solution
 def SumFunction(number1, number2):
@@ -774,7 +798,8 @@ printValue(3)
 2.10
 
 Question:
-Define a function that can receive two integral numbers in string form and compute their sum and then print it in console.
+Define a function that can receive two integral numbers in string form and compute their sum 
+and then print it in console.
 
 Hints:
 
@@ -809,7 +834,9 @@ printValue("3","4") #34
 
 
 Question:
-Define a function that can accept two strings as input and print the string with maximum length in console. If two strings have the same length, then the function should print al l strings line by line.
+Define a function that can accept two strings as input and print the string with maximum 
+length in console. If two strings have the same length, then the function should print all
+strings line by line.
 
 Hints:
 
@@ -836,7 +863,8 @@ printValue("one","three")
 2.10
 
 Question:
-Define a function that can accept an integer number as input and print the "It is an even number" if the number is even, otherwise print "It is an odd number".
+Define a function that can accept an integer number as input and print the "It is an even number" 
+if the number is even, otherwise print "It is an odd number".
 
 Hints:
 
@@ -857,7 +885,8 @@ checkValue(7)
 2.10
 
 Question:
-Define a function which can print a dictionary where the keys are numbers between 1 and 3 (both included) and the values are square of keys.
+Define a function which can print a dictionary where the keys are numbers between 
+1 and 3 (both included) and the values are square of keys.
 
 Hints:
 
@@ -883,7 +912,8 @@ printDict()
 2.10
 
 Question:
-Define a function which can print a dictionary where the keys are numbers between 1 and 20 (both included) and the values are square of keys.
+Define a function which can print a dictionary where the keys are numbers between 1 and 20 
+(both included) and the values are square of keys.
 
 Hints:
 
@@ -906,7 +936,8 @@ printDict()
 2.10
 
 Question:
-Define a function which can generate a dictionary where the keys are numbers between 1 and 20 (both included) and the values are square of keys. The function should just print the values only.
+Define a function which can generate a dictionary where the keys are numbers between 1 and 20 
+(both included) and the values are square of keys. The function should just print the values only.
 
 Hints:
 
@@ -930,7 +961,8 @@ printDict()
 2.10
 
 Question:
-Define a function which can generate a dictionary where the keys are numbers between 1 and 20 (both included) and the values are square of keys. The function should just print the keys only.
+Define a function which can generate a dictionary where the keys are numbers between 1 and 20 
+(both included) and the values are square of keys. The function should just print the keys only.
 
 Hints:
 
@@ -955,7 +987,8 @@ printDict()
 2.10
 
 Question:
-Define a function which can generate and print a list where the values are square of numbers between 1 and 20 (both included).
+Define a function which can generate and print a list where the values are square of numbers 
+between 1 and 20 (both included).
 
 Hints:
 
@@ -977,7 +1010,8 @@ printList()
 2.10
 
 Question:
-Define a function which can generate a list where the values are square of numbers between 1 and 20 (both included). Then the function needs to print the first 5 elements in the list.
+Define a function which can generate a list where the values are square of numbers between 
+1 and 20 (both included). Then the function needs to print the first 5 elements in the list.
 
 Hints:
 
@@ -1001,7 +1035,8 @@ printList()
 2.10
 
 Question:
-Define a function which can generate a list where the values are square of numbers between 1 and 20 (both included). Then the function needs to print the last 5 elements in the list.
+Define a function which can generate a list where the values are square of numbers between 
+1 and 20 (both included). Then the function needs to print the last 5 elements in the list.
 
 Hints: