how can I write a program that gets a set of n integers from the user and tells them the frequency of each number. Ex: Input: 3. 7. 2. 5. 8. 1. 3. 5. 5. 8
mainly having problems with the searching aspect
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In what computer language?
array of n numbers
one entry for each number
add one to the entry as the user inputs the number
display entry name and number it holds
You can write your answer in pseudo code.
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Definitely many ways to do this. A few come to mind. I'll use Python as the example language.
1. Append each entry to the list then run a list.count() command on each entry. (Of course you'd have to account for the multiple entries, maybe by sorting the list and only printing if the current entry is not the same as the one before it.)
2. Create a dictionary. If the entry does not exist in the dictionary, add it with the value of 0. If the entry does exist, increase the associated value by 1.
3. Variables. You could sort your list, and then create a "num_frequency" variable. Increment your variable by 1 when your list entries are duplicates. Display the variable and reset it when they aren't.
Of course, not all approaches are equal. But this at least shows a number of ways to approach the problem.
I'm working in Java. I was thinking of using a nested for loop but i cant really figure out exactly what to do