1. Type the expressions below in python interactively, and try to explain what's happening in each case: a. 2** 16 2/5, 2/5.0 b. "spam" + "eggs" S = "ham" "eggs "+S S*5 S[:0] "green %s and %s" % ("eggs", S) c. (x.) [0] (X', 'y') [1] d. L=[1,2,3] + [4,5,6] L. L:3. 니:이, 니-2]. 나-2:] ([1,2,3] + [4,5,6]) [2:4] [니2]. 니3]] L.reverse(); L L.sort(); L L.index(4)

1. Type the expressions below in python interactively, and try to explain what's happening in each case: a. 2** 16 2/5, 2/5.0 b. "spam" + "eggs" S = "ham" "eggs "+S S*5 S[:0] "green %s and %s" % ("eggs", S) c. (x.) [0] (X', 'y') [1] d. L=[1,2,3] + [4,5,6] L. L:3. 니:이, 니-2]. 나-2:] ([1,2,3] + [4,5,6]) [2:4] [니2]. 니3]] L.reverse(); L L.sort(); L L.index(4)

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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java please, Complete main() to read dates from input, one date per line. Each date's format must be as follows: March 1, 1990. Any date not following that format is incorrect and should be ignored. Use the substring() method to parse the string and extract the date. The input ends with -1 on a line alone. Output each correct date as: 3/1/1990. Ex: If the input is: March 1, 1990 April 2 1995 7/15/20 December 13, 2003 -1 then the output is: 3/1/1990 12/13/2003
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write a C++ program that determines whether or not a password is good. A good password is defined suchthat it is at least 8 characters long and contains at least one uppercase letter, at least one lowercase letter, andat least one number. Write a program that reads a password from the user, if the user enters a bad password,your program should ask the user to enter a password again. Count and display the number of attempts thatwere needed before a good password was generated. ((without using islower and isupper)) ((using the ascii )) Sample output: Enter a password:passThat isn't a good password, try again Enter a password:PasswordThat isn't a good password, try again Enter a password:Password1That's a good password. After 3 attempts
write a C++ program that determines whether or not a password is good. A good password is defined suchthat it is at least 8 characters long and contains at least one uppercase letter, at least one lowercase letter, andat least one number. Write a program that reads a password from the user, if the user enters a bad password,your program should ask the user to enter a password again. Count and display the number of attempts thatwere needed before a good password was generated. ((without using islower and isupper))
write a C++ program that determines whether or not a password is good. A good password is defined suchthat it is at least 8 characters long and contains at least one uppercase letter, at least one lowercase letter, andat least one number. Write a program that reads a password from the user, if the user enters a bad password,your program should ask the user to enter a password again. Count and display the number of attempts thatwere needed before a good password was generated. ((without using islower and isupper)) Sample output: Enter a password:passThat isn't a good password, try again Enter a password:PasswordThat isn't a good password, try again Enter a password:Password1That's a good password. After 3 attempts
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write a C++ program that determines whether or not a password is good. A good password is defined suchthat it is at least 8 characters long and contains at least one uppercase letter, at least one lowercase letter, andat least one number. Write a program that reads a password from the user, if the user enters a bad password,your program should ask the user to enter a password again. Count and display the number of attempts thatwere needed before a good password was generated. ?((without using islower and isupper)) ?((using the ascii values )) Sample output:⤵️ Enter a password:passThat isn't a good password, try again Enter a password:PasswordThat isn't a good password, try again Enter a password:Password1That's a good password. After 3 attempts
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