How to Calculate Letter Frequency in a Java Program

Learn how to modify a Java program to calculate and display the letter frequency as a decimal.
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How to Calculate Letter Frequency in a Java Program

When dealing with text analysis, one common task is to calculate the frequency of each letter in a given string. This is known as frequency analysis. In this post, we will walk you through how to write a Java program that calculates and displays these letter frequencies as decimals.

Step-by-Step Guide

Initialize Variables:
To track the frequencies of each letter, create an array of size 26 (for the English alphabet).

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Read the Text:
Read the input text from the user to process it for frequency analysis.

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Count Each Letter:
Loop through each character in the input string and update the corresponding position in the letterCounts array.

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Calculate Frequency:
To calculate the frequency as decimals, divide the count of each letter by the total number of letters.

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Display the Frequencies:
Finally, print out the calculated frequencies.

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Full Program Code

Here is the complete code for calculating and displaying letter frequencies in Java:

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Conclusion

By following these steps, you can easily modify your Java program to calculate and display the letter frequency as decimals. This can be particularly useful in various applications such as text analysis, cryptography, and more. Happy coding!