Difference between == and .equals() in Java:
== is used to compare the memory addresses of objects, while .equals() compares the contents of objects.
Example:
String str1 = new String("Hello");
String str2 = new String("Hello");
System.out.println(str1 == str2); // false (different memory addresses)
System.out.println(str1.equals(str2)); // true (same content)
Take an array of numbers as input and check if it is an array sorted in ascending order.
Eg : { 1, 2, 4, 7 } is sorted in ascending order.
{3, 4, 6, 2} is not sorted in ascending order.
Find the maximum & minimum number in an array of integers.
[HINT : Read about Integer.MIN_VALUE & Integer.MAX_VALUE in Java]
Input a string from the user. Create a new string called ‘result’ in which you will replace the letter ‘e’ in the original string with letter ‘i’.
Example :
original = “eabcdef’ ; result = “iabcdif”
Original = “xyz” ; result = “xyz”
Write a program to enter the numbers till the user wants and at the end it should display the count of positive, negative and zeros entered.