Explanation: Total number of unique elements are 3, i.e[1,2,3] and Therefore return 3 after assigning [1,2,3] in the beginning of the array. Explanation: Total number of unique elements are 4, i.e[1,2 ...

Your Mac didn’t mean to become a photo hoarder. But here we are. Ten screenshots of the same receipt, five identical sunsets, and a burst of 37 nearly identical selfies are quietly eating up your ...

Irene Okpanachi is a Features writer, covering mobile and PC guides that help you understand your devices. She has five years' experience in the Tech, E-commerce, and Food niches. Particularly, the ...

Gmail Account Space Free: Gmail comes with helpful features like spam protection, smart email filters, and 15GB of free storage. You can organize emails with labels, use smart replies, search easily, ...

Managing your iPhone photo library can become a daunting task, especially when duplicate photos accumulate and consume valuable storage space. Fortunately, the Photos app provides a built-in feature ...

Rarely is formatting perfect when you copy data from external sources into Microsoft Excel. As an example, you might copy business data from an online database only to find unwanted whitespace within ...

When you're working with a spreadsheet, duplicate data can sometimes make its way in and cause all sorts of problems. In this how-to, we demonstrate two methods of using Microsoft Excel for ...

Removing duplicates in Excel is an essential skill for anyone who works with large datasets. Whether you’re cleaning up customer information, analyzing financial data, or organizing a mailing list, ...

Got dozens (or hundreds) of repeat entries in your iPhone's address book? Here's how to quickly fix it. Pranay Parab is an independent tech journalist based in Mumbai, India. He covers tech for ...