Make a program that filters a list of strings and returns a list with only your friends name in it. If a name has exactly 4 letters in it, you can be sure that it has to be a friend of yours! Otherwise, you can be sure he's not... Ex: Input = ["Ryan", "Kieran", "Jason", "Yous"], Output = ["Ryan", "Yous"]

Sure, I can help you with that! Here's a Python program that filters a list of strings and returns only your friends' names:

def filter_friends(names):
    friends = []
    for name in names:
        if len(name) == 4:
            friends.append(name)
    return friends

You can use this function by passing in a list of names as an argument, like this:

names = ["Ryan", "Kieran", "Jason", "Yous"]
friends = filter_friends(names)
print(friends)

The output will be:

["Ryan", "Yous"]

This is because "Ryan" and "Yous" both have exactly 4 letters, so they are your friends! "Kieran" and "Jason" have more than 4 letters, so they are not your friends.

相关问题

Make a JavaScript program that filters a list of strings and returns a list with only your friends name in it. If a name has exactly 4 letters in it, you can be sure that it has to be a friend of yours! Otherwise, you can be sure he's not... Ex: Input = ["Ryan", "Kieran", "Jason", "Yous"], Output = ["Ryan", "Yous"]

Of course, here's a JavaScript program that filters a list of strings and returns only your friends' names:

function filterFriends(names) {
  let friends = [];
  for (let i = 0; i < names.length; i++) {
    if (names[i].length === 4) {
      friends.push(names[i]);
    }
  }
  return friends;
}

You can use this function by passing in a list of names as an argument, like this:

let names = ["Ryan", "Kieran", "Jason", "Yous"];
let friends = filterFriends(names);
console.log(friends);

The output will be:

["Ryan", "Yous"]

This is because "Ryan" and "Yous" both have exactly 4 letters, so they are your friends! "Kieran" and "Jason" have more than 4 letters, so they are not your friends.