how to remove duplicate characters in a string in java or android
how to remove duplicate characters in a string in java or android
hi, today we will see how to eliminate duplicate characters from a string
or how to get unique characters in a string.
first, I will declare a string.
the next step is convert this into a char array.
after this we will sort this
now we got all the characters in ascending order.
so repeated characters are placed one after other.
to check whether a character is repeated or not, just use
for loop with a char variable.
now check whether both variables are common or not using a
simple if statement.
next update the prev variable.
now to store all the unique characters, we use arraylist.
first letter will always be included in the list.
next store all unique letters.
the last step is to print all the letters.
lets check the output
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