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Suppose we have a lowercase string s that contains only letters and '?' character, we have to convert all '?' characters into lower case letters such that the final string will not have any consecutive repeating characters. If there is more than one solution, return any of them.So, if the input is like s = "hel??", then the output will be helab, se first question mark may be anything except 'l' and when first one is given, then second one can be anything except 'a'.To solve this, we will follow these steps −if size of s is same as 1, ... Read More
Suppose we have a square matrix; we have to find the sum of the matrix diagonals. So only include the sum of all of the elements on the primary diagonal and all the elements on the secondary diagonal and ignore the crossing element.So, if the input is like10596815323812321173then the output will be The primary diagonal elements are [10, 15, 12, 3] sum is 40, secondary diagonal [6, 3, 8, 2] sum is 19, so total sum 59.To solve this, we will follow these steps −m := row count of matrixif m is same as 1, thenreturn matrix[0, 0]count := 0for ... Read More
Suppose we have an array nums with positive values, we have to find a pattern of length m that is repeated k or more than k times. Here a pattern is a non-overlapping subarray (consecutive) that consists of one or more values and are repeated multiple times. A pattern is defined by its length and number of repetitions. We have to check whether there exists a pattern of length m that is repeated k or more times or not.So, if the input is like nums = [3, 5, 1, 4, 3, 1, 4, 3, 1, 4, 3, 9, 6, 1], ... Read More
Suppose we have a number n and an array called rounds. We have a circular track which consists of n different sectors labeled from 1 to n. Now consider a race will be held on this track, the race consists of m different rounds. The ith round starts at sector rounds[i - 1] and ends at sector rounds[i]. For example, if the round 1 starts at sector rounds[0] and ends at sector rounds[1]. So we have to find the most visited sectors sorted in ascending order. (The track numbers are in ascending order of sector numbers in the counter-clockwise direction)So, ... Read More
Suppose we have a number n, we have to return this number into string format where thousands are separated by comma (", ").So, if the input is like n = 512462687, then the output will be "512, 462, 687"To solve this, we will follow these steps −res := n as stringres := reversed form of resans := a blank stringfor i in range 0 to size of res - 1, doif i mod 3 is same as 0 and i is not same as 0, thenans := ans concatenate ', 'ans := ans concatenate res[i]ans := reversed form of ansreturn ... Read More
To set the local user account settings related to the account or the password expiration, we can use the Set-LocalUser command.The below command will change the local user Testuser account and password set to never expire.Set-LocalUser -Name Testuser -AccountNeverExpires -PasswordNeverExpires $true -VerboseThe below command will set the account expiry,Set-LocalUser -Name Testuser -AccountExpires 05/11/2022 -VerboseTo run the above commands on the remote computers, use the Invoke-Command.Invoke-Command -ComputerName Computer1, computer2 -ScriptBlock{ Set-LocalUser -Name Testuser -AccountNeverExpires -PasswordNeverExpires $true -Verbose } Invoke-Command -ComputerName Computer1, computer2 -ScriptBlock{ Set-LocalUser -Name Testuser -AccountExpires 05/11/2022 -Verbose }
To get the locked user accounts on the local or the remote machines using PowerShell, we can use the wmi method.PS C:\> gwmi win32_useraccount | where{$_.Lockout -eq $true}You can also use the CIM instance method alternatively.PS C:\> Get-CimInstance Win32_Useraccount | where{$_.Lockout -eq $true}To get the locked local user accounts on the remote computer, you can use the -ComputerName parameter in the WMI class or the CIM instance. For example,PS C:\> gwmi win32_useraccount -ComputerName TestMachine1, TestMachine2 | where{$_.Lockout -eq $true}
To validate the file or folder path inside the PowerShell function parameter, we need to use the ValidateScript command. Generally, we write the script as below to validate the path.function Validate-Path{ param( [parameter(Mandatory)] [String]$Path ) if(Test-Path $Path) {Write-Output "Path is valid"} else{Write-Output "Path is invalid"} }OutputPS C:\> Validate-Path -Path C:\Temp Path is validWe can add similar functionality inside the function parameter with the validatescript argument so the script will throw the error initially at the parameters check. See below, function Validate-Path{ param( [parameter(Mandatory)] ... Read More
To copy the files using the specific files extension using PowerShell, we can use the Copy-Item command.The below command will copy only the .ps1 files from the source to the destination.For example, PS C:\> Copy-Item -Path C:\Temp -Recurse -Filter *.ps1 -Destination C:\Temp1\ -VerboseIf the C:\Temp1 doesn't exist, it will create the destination folder and then copy the content of the file but the problem with this command is it copies the subfolders as well which doesn’t have the .ps1 file.So to copy the with the same folder structure without empty directories and the specific file extension we can write the ... Read More
To get the disabled local user accounts using PowerShell on the local and the remote system, we can use the WMI or the CIM instance method with the Win32_UserAccount class and the Disabled property to filter the result.PS C:\> gwmi win32_useraccount | where{$_.Disabled -eq $true}You can filter out the properties using the specific properties use the Select-Object pipeline command.PS C:\> gwmi win32_useraccount | where{$_.Disabled -eq $true} | Select Name, FullName, CaptionYou can also use the CIM instance method alternatively, PS C:\> Get-CimInstance win32_useraccount | where{$_.Disabled -eq $true}To get the disabled accounts on the remote systems, use the -ComputerName parameter in ... Read More