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Browse Coursesimport java.util.*; class ASC { static int count(int num) //num=0 { if(num==0)//0==0(f) return 0; else return 1+count(num/10);1/10 } public static void main(String args[]) { int num=12345; int result=count(num);//5 System.out.println(result);//5 } }
import java.util.*; class ASC { public static void main(String args[]) { Scanner s=new Scanner(System.in); int amount; while(true) { System.out.println(“enter the amount to withdraw”);//2300 amount=s.nextInt();//2300 if(amount==0) { System.out.println(“exiting…”); break; } if(amount%100!=0)2300%100==>00!=0 { System.out.println(“Invalid amount…”); } int a=amount/2000; amount=amount%2000; int b=amount/500; amount=amount%500; int c=amount/100; amount=amount%100; if(a>0) System.out.println(a+”x2000″); if(b>0) […]
import java.util.*; class Bank { public static void main(String args[])
Wrapper classes in java: A wrapper class in java is a class whose objects wraps or contains primitive datatypes Need: They convert primitive datatypes into objects In collection framework, such as Arraylist and sets,will store only objects and not primitive datatypes Primitive datatypes Wrapper classes char————————Character int————————-Integer float———————–Float double———————–Double […]
Grocery store discount system scenario A Grocery store provides discount based on the total bill amount Above Rs.1000: 20% discount Rs.500 to Rs.1000: 10% discount Below Rs.500: No discount Write a java program that calculates the final bill amount after applying the discount import java.util.*; class ASC { public […]
A company has installed a smart elevator system in its office building. The elevator operates based on the following rule. The elevator can move between 1st to 10th floor Users can enter their desired floor,but if the floor is outside the range,the system should print “Invalid floor” The elevator starts from 1st floor and moves […]
Find the common elements in 2 list(arraylist) import java.util.*; class ASC { public static void main(String args[]) { ArrayList<Integer> a=new ArrayList<>(); a.add(1); a.add(2); a.add(3);// 1 2 3 ArrayList<Integer> b=new ArrayList<>(); b.add(4); b.add(2); b.add(5);//4 2 5 a.retainAll(b);//retainall will keep only the common values System.out.println(a);}}
Remove duplicates from an array using hashset {1, 2, 2, 3, 4, 4, 5} import java.util.*; class ASC { public static void main(String args[]) { int arr[]={1, 2, 2, 3, 4, 4, 5}; HashSet<Integer> s=new HashSet<>(); for(int a:arr)//a=5 { s.add(a);//s=1 2 3 4 5 } System.out.println(s); } }
Add and display the elements(4 elements) using HashSet, check if an element exists there in a hashset,remove the element.. Find the smallest and largest element(number) using treeset class Display { public static void main(String args[]) { HashSet<String> a=new HashSet<String>(); a.add(“apple”); a.add(“mango”); a.add(“banana”); a.add(“apple”); //apple mango banana System.out.println(“mango is there..”+a.contains(“mango”)); a.remove(“mango”); […]
import java.util.*; class ASC { public static void main(String args[]) { HashSet<String> h=new HashSet<String>(); h.add(“Ram”); h.add(“Abi”); h.add(“Priya”); h.add(“John”); h.add(“Abi”); System.out.println(h); } }
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