Question

Assume that the string oldSeq has been properly declared and initialized and contains the string segment. Write a code segment that will remove the first occurrence of segment from oldSeq and store it in the string newSeq. Consider the following examples. If oldSeq is "1100000111" and segment is "11", then "00000111" should be stored in newSeq. If oldSeq is "0000011" and segment is "11", then "00000" should be stored in newSeq. If oldSeq is "1100000111" and segment is "00", then "11000111" should be stored in newSeq. Write the code segment below. Your code segment should meet all specifications and conform to the examples.

Answer 1

String oldSeq="1100000111";

String segment="11";

String newSeq=oldSeq.replaceFirst(segment, "");

Answer 2

The program is an illustration of string modification in Java.

The code segment that removes the first occurrence of oldSeq is:

String newSeq=oldSeq.replaceFirst(segment, "");

The flow of the above code segment is as follows:

• First, newSeq is declared as String
• Next, the value of the segment variable is searched in string oldSeq
• If segment is present in oldSeq, the first occurrence is replaced with an empty string

The first occurrence of segment in oldSeq is removed by using the replaceFirst() method

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