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
Reviewed by TECH UPDATE
on
April 26, 2021
Rating:

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