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Author: SabbirHasanat

App.java

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+public class App {
+    public static void main(String[] args) throws Exception {
+        System.out.println("Hello, World!");
+    }
+}

Circle.java

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+
+public class Circle {
+
+    public String calculatearea;
+
+    public String calculatearea() {
+        return null;
+    }
+
+    public void draw() {
+    }
+
+}

Final.java

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+public class Final {
+    public int x, y, z;
+
+    public void methodOne() {
+        x += 4;
+        ++y;
+        System.out.println(x);
+        System.out.println(y);
+    }
+
+    public void methodTwo() {
+        x += y;
+        y = x - 6;
+        System.out.println(y);
+    }
+
+    public void methodThree() {
+        z += y;
+        y = z - 6;
+        x = z - y;
+        System.out.println(z);
+        System.out.println(x);
+        System.out.println(y);
+    }
+    public static void main(String[] args) {
+        Final p = new Final();
+        p.x = 44;
+        p.methodOne();
+        p.y = 3;
+        p.methodOne();
+        p.methodOne();
+        p.methodTwo();
+        p.methodTwo();
+        p.z = 10;
+        p.methodThree();
+        p.methodThree();
+    }
+}

v1.java

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+public class v1 {
+    public static void main(String[] args) {
+        System.out.println("Iam Sabbir Hasanat & this is my first code");
+    }
+}

v10_1_Linear_Search.java

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+import java.util.Scanner;
+
+public class v10_1_Linear_Search {
+    public static void main(String[] args) {
+
+        Scanner sc = new Scanner(System.in);
+
+        System.out.print("Enter size: ");
+        int n = sc.nextInt();
+
+        System.out.print("Enter elements: ");
+        int a[] = new int[100];
+
+        int i,n1;
+        for(i=0;i<n;i++){
+            a[i] = sc.nextInt();
+        }
+
+        System.out.print("Enter Searching elements: " + "\n");
+        n1=sc.nextInt();
+
+        for(i=0;i<n;i++){
+            if(a[i]==n1){ 
+                System.out.println(n1+" found at "+ (i+1) );  
+                break; 
+            }
+        }
+        if(i==n) System.out.println("Not found");
+    }
+}

v10_1__binary_search.java

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+import java.util.Scanner;
+
+public class v10_1__binary_search {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        System.out.print("Enter size: ");
+        int n = sc.nextInt();
+
+        int number[] = new int[n];
+
+        System.out.println("Enter elements: ");
+        for(int i=0;i<n;i++){
+            number[i] = sc.nextInt();
+        }
+
+        System.out.print("Enter searching elements: ");
+        int x = sc.nextInt();
+
+        for(int i=0;i<n;i++){
+            if(number[i] == x){
+                System.out.println("x found at index: "+ (i+1));
+            }
+        }
+    }
+}

v10__array.java

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+import java.util.Scanner;
+
+public class v10__array{
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        System.out.print("Enter size: ");
+        int size = sc.nextInt();
+        int number[] = new int[size];
+
+        System.out.print("Enter elements: ");
+        for(int i=0; i<size; i++){
+            number[i] = sc.nextInt();
+        }
+
+        System.out.print("printing elements: ");
+        for(int i=0;i<size;i++){
+            System.out.print(number[i]+" ");
+        }
+    }
+}

v10_array.java

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+import java.util.*;
+
+public class v10_array {
+    public static void main(String[] args) {
+        
+        //standard style
+        Scanner sc = new Scanner(System.in);
+        System.out.print("Enter size: ");
+        int size = sc.nextInt();
+        System.out.print("Enter elements: ");
+        int numbers[] = new int[size];
+
+        int i;
+        
+        //input
+        for(i=0;i<size;i++){
+            numbers[i] = sc.nextInt();
+        }
+
+        //output
+        for(i =0;i<size;i++){
+            System.out.print(numbers[i]+" ");
+        }
+
+        /*    //1st style
+        //int[] marks = new int[3];   // *1st style
+
+        int marks[] = new int[3];    // *2nd style
+
+        marks[0]= 97;
+        marks[1]= 98;
+        marks[2]= 99;
+
+        System.out.println("Physics= "+marks[0]);
+        System.out.println("Chemistry= "+marks[1]);
+        System.out.println("Math= "+marks[2]);
+        */
+
+        /*//2nd style
+        int marks[]={97,98,99}*/
+
+
+        
+    }
+}

v11_1.java

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+import java.util.Scanner;
+
+public class v11_1 {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        System.out.print("Enter rows: ");
+        int rows = sc.nextInt();
+        System.out.print("Enter cols: ");
+        int cols = sc.nextInt();
+
+        int numbers[][] = new int[rows][cols];
+
+        //input
+        System.out.println("Enter elements: ");
+        for(int i=0; i<rows; i++){
+            for(int j=0; j<cols; j++){
+                numbers[i][j] = sc.nextInt();
+            }
+        }
+
+        System.out.print("Enter found elements: ");
+        int x = sc.nextInt();
+
+
+        for(int i=0; i<rows; i++){
+            for(int j=0; j<cols; j++){
+                if(numbers[i][j] == x){
+                    System.out.println("x found at location ("+i+","+j+")");
+                }
+            }
+            System.out.println();
+        }
+    }
+}

v11__2d_array.java

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+import java.util.Scanner;
+
+public class v11__2d_array {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        int rows = sc.nextInt();
+        int cols = sc.nextInt();
+
+        int numbers[][] = new int[rows][cols];
+
+        for(int i=0; i<rows; i++){
+            for(int j=0; j<cols; j++){
+                numbers[i][j] = sc.nextInt();
+            }
+        }
+
+
+        //output
+        for(int i=0; i<rows; i++){
+            for(int j=0; j<cols; j++){
+                System.out.print(numbers[i][j]+" ");
+            }
+            System.out.println();
+        }
+    }
+}