Merge pull request larissalages#252 from sakshi-kst/master

Hackerrank- Java and 30DaysOfCode solutions added

Author: larissalages

Hackerrank/30 days of code/Day25_RunningTimeAndComplexity.java

@@ -0,0 +1,29 @@
+import java.io.*;
+import java.util.*;
+
+public class Solution {
+
+    public static void main(String[] args) 
+    {
+        Scanner sc = new Scanner(System.in);
+        int n  = sc.nextInt();
+        for(int i=0; i<n; i++)
+        {
+            int c = 0;
+            int p = sc.nextInt();
+            if(p==1)
+                System.out.println("Not prime");
+            for(int j=2; j*j<=p;j++)
+            {
+                if(p%j==0)
+                {
+                    System.out.println("Not prime");
+                    c++;
+                    break;
+                }
+            }
+            if(c==0 && p!=1)
+                System.out.println("Prime");
+        }
+    }
+}

Hackerrank/java/Java_2D_Array.java

@@ -0,0 +1,43 @@
+import java.io.*;
+import java.math.*;
+import java.security.*;
+import java.text.*;
+import java.util.*;
+import java.util.concurrent.*;
+import java.util.regex.*;
+
+public class Solution {
+
+
+
+    private static final Scanner scanner = new Scanner(System.in);
+
+    public static void main(String[] args) {
+        int[][] arr = new int[6][6];
+        int max = -70;
+
+        for (int i = 0; i < 6; i++) {
+            String[] arrRowItems = scanner.nextLine().split(" ");
+            scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");
+
+            for (int j = 0; j < 6; j++) {
+                int arrItem = Integer.parseInt(arrRowItems[j]);
+                arr[i][j] = arrItem;
+            }
+        }
+
+        for(int i=0;i<4;i++)
+        {
+            for(int j=0;j<4;j++)
+            {
+                int sum = arr[i][j] + arr[i][j+1] + arr[i][j+2] + arr[i+1][j+1] + arr[i+2][j] + arr[i+2][j+1] + arr[i+2][j+2];
+                if(sum >= max)
+                    max = sum;
+            }
+        }
+
+        System.out.println(max);
+
+        scanner.close();
+    }
+}

Hackerrank/java/Java_String_Tokens.java

@@ -0,0 +1,22 @@
+import java.io.*;
+import java.util.*;
+
+public class Solution {
+
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        String s = scan.nextLine().trim();
+
+        String[] str = s.split("[ !,?._'@]+");
+        int l = str.length;
+        if(s.compareTo("")==0)
+            System.out.println(0);
+        else
+        {
+            System.out.println(l);
+            for(int i=0;i<l;i++)
+                System.out.println(str[i]);
+        }
+        scan.close();
+    }
+}