Rick is linking different pages in his website. Match the value of the attribute to its meaning to enable Rick to choose the most suitable value the link refers to. Match the first 4 to the last 4.
1. hreflang
2. media
3. _self
4. _blank

1.opens the link in a new window

2. opens the link in the existing window

3. language of the linked document

4. specifies the device on which the link is optimized

A-12.3 an american spy is deep undercover in the hostile country of phonemia. in order not to waste scarce resources, any time he wants to send a message back home, he removes all the punctuation from his message and converts all the letters to uppercase. so, for example, to send the message, “abort the plan! meet at the dark cabin.” he would transmit given such a string, s, of n uppercase letters, describe an efficient way of breaking it into a sequence of valid english words. you may assume that you have a function, valid(s), which can take a character string, s, and return true if and only if s is a valid english word. what is the running time of your algorithm, assuming each call to the function, valid, runs in o(1) time?