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Improve Article Save Article Like Article Improve Article Save Article Like Article Given string str, the task is to check whether the given string is a valid file extension or not by using Regular Expression. The valid file extension must specify the following conditions:It should start with a string of at least one character.It should not have any white space.It should be followed by a dot(.).It should end with any one of the file extensions: ex : jpg, txt, mp3, png, ppt, .. etcExamples:Input: str =…

via Warner Bros. Almost all of the focus surrounding James Gunn’s Superman: Legacy has fallen on the prospective identities of those in front of the camera, so much so that everyone seems to be overlooking the fact the filmmaker has already started gathering a troupe of trusted collaborators behind it. Sure, it only stretches to a pair of names so far, but it’s still worth noting that costume designer and Marvel Cinematic Universe veteran Judianna Makovsky worked on Guardians of the Galaxy Vol. 2 and 3, the…

The Google Pixel 7a is the new go-to mid-range Android device. It’s so good that it’s making me question why anyone should buy a regular Pixel 7. I chose the Pixel 7 because I wanted a smaller, cheaper device with similar camera capabilities to the Pixel 7 Pro. But now that the Pixel 7a is out for just $500 and is so good, Google is clearly going to have difficulty justifying why anyone should spend the extra $200 for the base Pixel 7's extra goodies. Fortunately, I saved money on my Pixel 7 because I traded in a Pixel 3.…

For many people, taking notes using a pen and paper will always be easier and more intuitive than typing. The Nuwa Pen allows them to keep doing so, but it also digitizes what they've written for subsequent sharing and searchability.So first of all, yes, we have seen handwriting-recording smartpens before. One of the key differences of the Nuwa Pen, however, lies in the fact that it can be used on any ol' paper that happens to be at hand – by contrast, most others require special paper.Made by Dutch startup Nuwa, the…

As the number of electric vehicles on our roads increases, so does the need for charger-accessible parking spots. Instead of having to create more EV-specific spots, parking garage operators could soon utilize Autev charging robots that come to people's cars.Designed by a Seattle-based startup of the same name, the Autev bot is basically a big battery on wheels. It autonomously makes its way to a user's electric car (or other type of EV) when hailed by that person via an app. That vehicle can be located at any parking…

June Wan/ZDNETWhen was the last time you restarted your phone? And I don't mean opening up the active apps tray and swiping them all away. When was the last time you turned off the device completely and then turned it back on?Restarting a phone is typically brought up when you're experiencing lag, misfunctioning apps, and other software defects, but it's also a healthy practice even if your phone is working as intended, or is the best on the market. You can compare it to giving your car an oil change; it's not…

US-based telecommunications company AT&T has achieved a noteworthy milestone by successfully completing the first-ever two-way audio call using satellites with a standard smartphone.According to Engadget, the call was placed from AT&T's location in Midland, Texas, to Japanese mobile carrier Rakuten, and the device used was a Samsung Galaxy S22 smartphone.The call was made possible through AST SpaceMobile's BlueWalker 3 satellite technology, which facilitated seamless communication between the two…

Smartphones are slowly adopting the capability to connect to satellites for emergency calls and messages with the help of special hardware components. The iPhone 14 was the first smartphone to offer emergency communications via satellite connectivity. Samsung is also expected to bring a similar feature to its Galaxy smartphones in the future. But what if regular smartphones could offer satellite calls and messages? World’s first satellite call using an unmodified smartphone was made using Galaxy S22 Ultra Well, the…

New rumors surrounding the upcoming iPhone 15 say a frosted glass design is coming to the iPhone 15 and iPhone 15 Plus alongside a new cyan color.According to the rumors posted to Weibo, Apple plans to take inspiration from the iPhone 14 Pro and iPhone 14 Pro Max by giving the regular iPhone 15 the much-loved frosted glass design on the rear of the device. The report also claims a cyan color is in the works, similar to the green offered for iPhone 12 and iPhone 12 mini. This Weibo source has been correct in the past,…

Good morning. I’m Paul Thornton, and it is Saturday, April 15, 2023. If you live outside three sparsely populated counties in California’s far north, then today is not Tax Day for you — you have until Oct. 16 to file. Let’s look back at the week in Opinion.If Supreme Court Justice Clarence Thomas is a man who tells the truth, then he must have felt great pain vacationing with Texas billionaire Harlan Crow on the Republican donor’s superyacht, at his private resort in New York’s Adirondack Mountains or flying on his…