Problem Description
The following table lists an octave of music notes, beginning with middle A, along with their frequencies.
Note Frequency (Hz)
A4 440.00
Begin by writing a program that reads the name of a note from the user and displays the notes frequency. Your program should support all of the notes listed previously.
Once you have your program working correctly for the notes listed previously you should add support for all of the notes from A0 to A8.
While this could be done by adding many additional cases to your if statement, such a solution is cumbersome,
inelegant and unacceptable for the purposes of this exercise. Instead, you should exploit the relationship between notes in adjacent octaves. In particular, the frequency of any note in octave n is half the frequency of the corresponding note in octave n+1.
By using this relationship, you should be able to add support for the additional notes without adding additional cases to your if statement.
Hint: To complete this exercise you will need to extract individual characters from the two-character note name so that you can work with the letter and the octave number separately.
Once you have separated the parts, compute the frequency of the note in the fourth octave using the data in the table above.
Then divide the frequency by 2 power(4-x ), where x is the octave number entered by the user. This will halve or double the frequency the correct number of times.
Then divide the frequency by 2 power(4-x ), where x is the octave number entered by the user. (freq=freq/2**(4-octave))CODING ARENA
a=input()
b=int(a[1])
print(440//(2**(4-b)))
Test Case 1
Input (stdin)A2
Expected Output110
Test Case 2
Input (stdin)A8
Expected Output7040
This blog is to help for the programmers to learn the programs and not to demotivate any people .Our intention is to make the learners to learn the code easily.
Friday, February 1, 2019
Grade
Problem Description
Write a program asks the user to enter a exam score, and then prints the grade (A/B/C/D) that corresponds to the score.
If the score that the user entered is less than 0 or greater than 100, the program prints an error message.
Use the following grades
A grade >=85
B grade 70-85
C grade 50-70
D grade <50
Mandatory:
Use if and elifCODING ARENA
a=int(input())
if(a>=85 and a<=100):
print("A")
elif(a>=70 and a<85):
print("B")
elif(a>=50 and a<70):
print("C")
else:
print("D")
Test Case 1
Input (stdin)85
Expected OutputA
Test Case 2
Input (stdin)78
Expected OutputB
Richter Scale
Problem Description
The following table contains earthquake magnitude ranges on the Richter scale and their descriptors:
Magnitude Descriptor
Less than 2.0 Micro
2.0 to less than 3.0 Very minor
3.0 to less than 4.0 Minor
4.0 to less than 5.0 Light
5.0 to less than 6.0 Moderate
6.0 to less than 7.0 Strong
7.0 to less than 8.0 Major
8.0 to less than 10.0 Great
10.0 or more Meteoric
Write a program that reads amagnitude from the user and displays the appropriate descriptor as part of a meaningful message. For example, if the user enters 5.5 then your program should indicate that a magnitude 5.5 earthquake is considered to be a moderate earthquake
Mandatory:
Use if and elifCODING ARENA
a=float(input())
if(a<2.0):
print("Micro")
elif(a>=2.0 and a<3.0):
print("Very minor")
elif(a>=3.0 and a<4.0):
print("Minor")
elif(a>=4.0 and a<5.0):
print("Light")
elif(a>=5.0 and a<6.0):
print("Moderate")
elif(a>=6.0 and a<7.0):
print("Strong")
elif(a>=7.0 and a<8.0):
print("Major")
elif(a>=8.0 and a<10.0):
print("Great")
else:
print("Meteoric")
Test Case 1
Input (stdin)7.9
Expected OutputMajor
Test Case 2
Input (stdin)8
Expected OutputGreat
Note To Frequency - F NOTE
Problem Description
The following table lists an octave of music notes, beginning with middle F, along with their frequencies.
Note Frequency (Hz) F4 349.63
Begin by writing a program that reads the name of a note from the user and displays the notes frequency. Your program should support all of the notes listed previously.
Once you have your program working correctly for the notes listed previously you should add support for all of the notes from F0 to F8. While this could be done by adding many additional cases to your if statement, such a solution is cumbersome,
inelegant and unacceptable for the purposes of this exercise.
Instead, you should exploit the relationship between notes in adjacent octaves. In particular, the frequency of any note in octave n is half the frequency of the corresponding note in octave n+1.
By using this relationship, you should be able to add support for the additional notes without adding additional cases to your if statement.
Hint:
To complete this exercise you will need to extract individual characters from the two-character note name so that you can work with the letter and the octave number separately.
Once you have separated the parts, compute the frequency of the note in the fourth octave using the data in the table above.
Then divide the frequency by 2 power(4-x ), where x is the octave number entered by the user.
Then divide the frequency by 2 power(4-x ), where x is the octave number entered by the user. (freq=freq/2**(4-octave))
This will halve or double the frequency the correct number of times.CODING ARENA
a=input()
b=int(a[1])
print(round(349.63/(2**(4-b)),4))
Test Case 1
Input (stdin)F7
Expected Output2797.04
Test Case 2
Input (stdin)F2
Expected Output87.4075
Indian Zodiac
Problem Description
The Indian zodiac assigns animals to years in a 12 year cycle. One 12 year cycle is shown in the table below. The pattern repeats from there, with 2012 being another year of the dragon, and 1999 being another year of the hare.
2000 Dragon
2001 Snake
2002 Horse
2003 Sheep
2004 Monkey
2005 Rooster
2006 Dog
2007 Pig
2008 Rat
2009 Ox
2010 Tiger
2011 Hare
Write a program that reads a year from the user and displays the animal associated with that year. Your program should work correctly for any year greater than or equal to zero, not just the ones listed in the table.
Mandatory:
Use if and elifCODING ARENA
year = int(input())
if (year - 2000) % 12 == 0:
sign = 'Dragon'
elif (year - 2000) % 12 == 1:
sign = 'Snake'
elif (year - 2000) % 12 == 2:
sign = 'Horse'
elif (year - 2000) % 12 == 3:
sign = 'sheep'
elif (year - 2000) % 12 == 4:
sign = 'Monkey'
elif (year - 2000) % 12 == 5:
sign = 'Rooster'
elif (year - 2000) % 12 == 6:
sign = 'Dog'
elif (year - 2000) % 12 == 7:
sign = 'Pig'
elif (year - 2000) % 12 == 8:
sign = 'Rat'
elif (year - 2000) % 12 == 9:
sign = 'Ox'
elif (year - 2000) % 12 == 10:
sign = 'Tiger'
else:
sign = 'Hare'
print(sign)
Test Case 1
Input (stdin)1998
Expected OutputTiger
Test Case 2
Input (stdin)2017
Expected OutputRooster
Noise Levels
Problem Description
The following table lists the sound level in decibels for several common noises.Noise Decibel level (dB),
Jackhammer 130
Gas lawnmower 106
Alarm clock 70
Quiet room 40
Write a program that reads a sound level in decibels from the user.
If the user enters a decibel level that matches one of the noises in the table then your program should display a message containing only that noise.
If the user enters a number of decibels between the noises listed then your program should display a message indicating which noises the level is between.
Ensure that your program also generates reasonable output for a value smaller than the quietest noise in the table, and for a value larger than the loudest noise in the table.
Note:
Use only if and elifCODING ARENA
a=int(input())
if(a>=130):
print("Jackhammer")
elif(a>=106 and a<130):
print("Gas lawnmower")
elif(a>=70 and a<106):
print("Alarm clock")
elif(a>=40 and a<70):
print("Quiet room")
else:
print("******")
Test Case 1
Input (stdin)130
Expected OutputJackhammer
Test Case 2
Input (stdin)106
Expected OutputGas lawnmower
India Vs England 50-50 Match
Problem Description
Virat Kohli has won the toss against England in a 50 Over World Cup Final 2019. During the Toss time the commentator have him a funny task to test his mathematical skills.
Shastri was the umpire to judge his mathematical skills. When the number is 28 he needs tell "INDIA" and when the number is 25 he needs to tell "ENGLAND".
Refer sample Input and Output:
Input 1: 20 Output: INDIA
Input 2: 21 Output: ENGLAND
Input 3: 22 Output: INDIACODING ARENA
a=int(input())
if(a%2==0):
print("INDIA")
else:
print("ENGLAND")
Test Case 1
Input (stdin)20
Expected OutputINDIA
Test Case 2
Input (stdin)21
Expected OutputENGLAND
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