Write a function called letter_gradethat has a type int input parameter called points and returns through an output parameter gradepthe appropriate lettergrade using a straight scale (90–100 is an a, 80–89 is a b, and so on). returnthrough a second output parameter (just_missedp) an indication of whetherthe student just missed the next higher grade (true for 89, 79, and so on).

Acommon algorithm for converting a decimal number to binary is to repeatedly divide the decimal number by 2 and save the remainder. this division is continued until the result is zero. then, each of the remainders that have been saved are used to construct the binary number.write a recursive java method that implements this algorithm.it will accept a value of int and return a string with the appropriate binary character representation of the decimal number.my code: public class lab16{public string converttobinary(int input){int a; if(input > 0){a = input % 2; return (converttobinary(input / 2) + "" +a); } return ""; } }