Write a Java program to test if a given string contains only digits and special symbols (+,=,,*,/,%,&,$) User inputs a string and program prints out true if the input string contains only digits and special symbols ; otherwise it prints out false. You may use Scan objects and loops. Example 1: Input a string to check: 123/5-$ Result: true Example 2: Input a string to check: 123bad Result: false

Write a program that uses nested loops to display a pattern like the examples below. It must not use any formatting operators (e.g., string concatenation) to print the strings to the terminal. Example pyramid-1: #... ##... ###... ####... #####... Example pyramid-2: ##### ####.. ###.... ##...... #........ ..........

Loops: Based on the following code segment: int val = 10; String s = String.format("%d", val - 5); while (val < 25) { s +=String.format(",%3d", val); val += 5; } System.out.println(s); Select the code using a for loop that produces identical output: String s = String.format("%d", val); for (int val = 10; val < 25; val + 5) { s += String.format(",%3d", val); } System.out.println(s); Strings = String.format("%d", 5); for (int val = 10; val <= 25; val += 5) { s +=String.format(",%3d", val); } System.out.println(s); String s = String.format("%d", 5); for (int val s += String.format(",%3d", val); } == 10; val < 25; val + 5) { System.out.println(s); None of these will produce the same output. String s = String.format("%d", 5); for (int val = 10, val < 25, val += 5) { s += String.format(",%3d", val); } System.out.println(s); Strings = String.format("%d", 5); for (int val = 10; val < 25; val += 5) { s +=String.format(",%3d", val); } System.out.println(s); String s = String.format("%d", 5); for…

In Coral Language 3.22 LAB: Loops: Countdown until matching digits   Write a program that takes in an integer in the range 20-98 as input. The output is a countdown starting from the integer, and stopping when both output digits are identical. Ex: If the input is: 93 the output is: 93 92 91 90 89 88 Ex: If the input is: 77 the output is: 77 Ex: If the input is: 9 or any number not between 20 and 98 (inclusive), the output is: Input must be 20-98 For coding simplicity, follow each output number by a space, even the last one. Use a while loop. Compare the digits; do not write a large if-else for all possible same-digit numbers (11, 22, 33, …, 88), as that approach would be cumbersome for large ranges.

Take input a string and create a new string where 'if' is added to the front of the input string. If the string already begins with 'if', return the string unchanged.Sample Input:"if else""else"Sample Output:if elseif else

Task 3. Remove white spaces and special symbols Program asks user to input a string to remove white spaces and special symbols (dashes, commas and dots). User inputs a string (with several words) and program prints out the input string without white spaces and special symbols. You may use Scan objects and loops. Example: Input a string to remove special symbols: hey, - i like may. Result: heyilikemay