Web Reference: A HashMap is created to track the frequency of the words in the note as a value. Using the index of the message String array as a key for this value we can then compare the value total from the note, which has now been put into a hashmap with a corrispodning frequency, to the magazine. May 27, 2020 · Now, let’s move forward to the solution. Usually, for every problem I tackle, I first identify a suitable data structure that will help me design a faster algorithm. Harold is a kidnapper who wrote a ransom note, but now he is worried it will be traced back to him through his handwriting. He found a magazine and wants to know if he can cut out whole words from it and use them to create an untraceable replica of his ransom note.
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