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To type hello in your phone, you would have pressed the keys in the following order: 44-33-555-555- 666. To denote the pauses you have to take between entering each series of numbers, we will be using space characters. So, the string '44 33 555 555 666' would be translated into 'hello'. To represent the mapping between a sequence of digits and the letter that it represents we will be using a dictionary. The dictionary will be mapping integers between 0 and 9 to lists of strings. The position of the string in the letter denotes how many times the integer should be repeated for it to represent such string. So, for instance the dictionary {2 : ['a', 'b', 'c'1, 7: ['p', 'q', 'r', 's'1} tells us that to represent the string 'a' we need the integer 2 repeated once (because 'a' is the first string in the list to which the key 2 maps). On the other hand, to represent the string 'r' we need to use the integer 7 repeated three times, since 'r' is the third string in the list to which 7 maps. Write a function (including docstring) called same_chars that takes a string as input and returns true if the string contains at least one character and all the characters within the strings are equal. For example: » same_chars('555') True >>> same_chars('aaaaa') True >>> same_chars('COMP') False >>> same_chars('aaAa') False

To type hello in your phone, you would have pressed the keys in the following order: 44-33-555-555- 666. To denote the pauses you have to take between entering each series of numbers, we will be using space characters. So, the string '44 33 555 555 666' would be translated into 'hello'. To represent the mapping between a sequence of digits and the letter that it represents we will be using a dictionary. The dictionary will be mapping integers between 0 and 9 to lists of strings. The position of the string in the letter denotes how many times the integer should be repeated for it to represent such string. So, for instance the dictionary {2 : ['a', 'b', 'c'1, 7: ['p', 'q', 'r', 's'1} tells us that to represent the string 'a' we need the integer 2 repeated once (because 'a' is the first string in the list to which the key 2 maps). On the other hand, to represent the string 'r' we need to use the integer 7 repeated three times, since 'r' is the third string in the list to which 7 maps. Write a function (including docstring) called same_chars that takes a string as input and returns true if the string contains at least one character and all the characters within the strings are equal. For example: » same_chars('555') True >>> same_chars('aaaaa') True >>> same_chars('COMP') False >>> same_chars('aaAa') False

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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To type hello in your phone, you would have pressed the keys in the following order: 44-33-555-555- 666. To denote the pauses you have to take between entering each series of numbers, we will be using space characters. So, the string '44 33 555 555 666' would be translated into 'hello'. To represent the mapping between a sequence of digits and the letter that it represents we will be using a dictionary. The dictionary will be mapping integers between 0 and 9 to lists of strings. The position of the string in the letter denotes how many times the integer should be repeated for it to represent such string. So, for instance the dictionary {2 : ['a', 'b', 'c'], 7 : ['p', 'q', 'r', 's']} tells us that to represent the string 'a' we need the integer 2 repeated once (because 'a' is the first string in the list to which the key 2 maps). On the other hand, to represent the string 'r' we need to use the integer 7 repeated three times, since 'r' is the third string in the list to which 7 maps. Write a function (including docstring) called same_chars that takes a string as input and returns true if the string contains at least one character and all the characters within the strings are equal. For example: > same_chars('555') True >>> same_chars('aaaaa') True >>> same_chars('COMP') False >>> same_chars('aaAa') False
Transcribed Image Text:To type hello in your phone, you would have pressed the keys in the following order: 44-33-555-555- 666. To denote the pauses you have to take between entering each series of numbers, we will be using space characters. So, the string '44 33 555 555 666' would be translated into 'hello'. To represent the mapping between a sequence of digits and the letter that it represents we will be using a dictionary. The dictionary will be mapping integers between 0 and 9 to lists of strings. The position of the string in the letter denotes how many times the integer should be repeated for it to represent such string. So, for instance the dictionary {2 : ['a', 'b', 'c'], 7 : ['p', 'q', 'r', 's']} tells us that to represent the string 'a' we need the integer 2 repeated once (because 'a' is the first string in the list to which the key 2 maps). On the other hand, to represent the string 'r' we need to use the integer 7 repeated three times, since 'r' is the third string in the list to which 7 maps. Write a function (including docstring) called same_chars that takes a string as input and returns true if the string contains at least one character and all the characters within the strings are equal. For example: > same_chars('555') True >>> same_chars('aaaaa') True >>> same_chars('COMP') False >>> same_chars('aaAa') False
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