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Mini Project Java Hands-On Solutions

 Mini Project Java Hands-On Solutions



The main agenda of this solution is those who are unable to do this course due to facing some issues, a little bit of lack of knowledge on these hands-on questions. Try to understand these codes and solve your hands-On Problems. (Not encourage copy and paste these solutions).

The Course Id: -  63716

1. Strings in Java



import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Solution{
    
    public static int charSearch(String str,char ch){
        //complete the code
        char[] array = str.toCharArray();
        int count = 0;
        for(int i=0;i<str.length();i++){
            if(array[i] == ch){
                count++;
            }
        }
        return count;
    }

public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

String str = reader.readLine();
char ch = (char)reader.read();
System.out.println(charSearch(str,ch));

}
}

2. Arrays in Java



import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {
    public static void main(String args[] ) throws Exception {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT */
        Scanner scanner = new Scanner(System.in);
        char[] ch = {'0','1','2','3','4','5','6','7','8','9'};
        int a = scanner.nextInt();
        String str = Integer.toString(a);
        int count = 0;
        for(int i=0;i<ch.length;i++){
            for(int j=0;j<str.length();j++){
                if(str.charAt(j) == ch[i])
                count++;
            }
        if(count>0){
            System.out.println(ch[i]+": "+count);
            count = 0;
        }
        }
        
    }
}

3. Collections in Java:- 



import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {
    public static void main(String args[] ) throws Exception {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT */
        Scanner scanner = new Scanner(System.in);
        HashMap<Integer,String> hash = new HashMap<>();
        int n = scanner.nextInt(); 
        scanner.nextLine();
        while(n>0){
            String str =scanner.nextLine();
            String s[] = str.split(" ");
            hash.put(Integer.parseInt(s[0]), s[1]);
            n--;
        }
        int k = scanner.nextInt();
        if(hash.containsKey(k)){
            System.out.println(hash.get(k));
        }
        else{
            System.out.println("-1");
        }
    }
}


Thank You
Mini Project Java Hands-On Solutions Mini Project Java Hands-On Solutions Reviewed by TECH UPDATE on April 26, 2021 Rating: 5

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