How does this code print the reverse of a string?

Question

String str = “stressed”;
for (int i = str.length()-1; i >= 0; i—)
System.out.print(str.charAt(i));

Answer 1

step by step code explaination:

//this declares the String and gives it a value
String str = "stressed";

//this for-loop in this case starts from 7 and goes down to 0, in general it starts from the index of the last charater of the string
for(int i=str.length()-1;i>=0;i--){
//this prints the character of an String at an specific index
System.out.print(str.charAt(i));
}

step by step for-loop iterations:
i = 7, str.charAt(7) = 'd'
i = 6, str.charAt(6) = 'e'
i = 5, str.charAt(5) = 's'
i = 4, str.charAt(4) = 's'
i = 3, str.charAt(3) = 'e'
i = 2, str.charAt(2) = 'r'
i = 1, str.charAt(1) = 't'
i = 0, str.charAt(0) = 's'
for-loop condition stops