1. WAP to determine length of string input by the user. 2. WAP TO Return the position of the first occurrence of a text in a string. 3. wap TO Search for a text in a string and return the text if found? 4. wap to replace characters in a string? 5. WAP to return today's date and time 6. WAP to calculate the years since 1970 7. WAP to set a specific date 8. WAP to convert today's date (according to UTC) to a string 9. WAP to write a weekday, and not just a number 10. WAP to Display a clock 11. Write a program to create and display an array 12. WAP to concat arrays 13. WAP to join elements of array using JOIN() 14. WAP to Remove the last element of an array 15. WAP to Add new elements to the end of an array 16. WAP to Reverse the order of the elements in an array? 17. WAP Remove the first element of an array? 18. WAP to Select elements from an array, sort an array (alphabetically and ascending)/ sort numbers (numerically and ascending)/Sort numbers (numericall...