Question

Write a java statement for each of the following. (i) Extract the second last character of a word stored in the variable w. (ii) Find and display the index of last space in a string s.​

Answer 1

Question:-

• Write a java statement for each of the following.

1. Extract the second last character of a word stored in the variable w.
2. Find and display the index of last space in a string s.

Answer:-

1. char ch=w.charAt(w.length()-2);
2. int index= s.lastIndexOf(' ');

Note:-

• charAt() returns the character at given index.
• length() returns the length of the string.
• lastIndexOf() returns the last Index of a given character.

• Since we have to find the last second character, use length()-2. Note that the word can be of any length.

Sample Example:-

• Let the word be "BrainlyProgrammer"
• I want 'e' as the answer how will I get? The length of the word is 17 (length starts with 1 and index starts with 0)
• Index of 'e' is 15.
• And character in length()-1 th index is the last character. So, to find second last use length()-2