Please explain whats the meaning of substring(1) and why we take it and the next two lines.this is from RECURSION get subsequences

#1

String ros = str.substring(1);
ArrayList myresult = new ArrayList<>();
ArrayList recresult = getSS(ros);

#2

hello @amankat
substirng(1) simply means that we take subpart of string starting with index 1.
for example let the string str be “AMANKAT”
if we write str.substring(1) the we get “MANKAT”.

#3

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