12 to 24 hr format

SOLUTIONS/12-to-24-hr-format.java

@@ -0,0 +1,60 @@
+/* package codechef; // don't place package name! */
+
+import java.util.*;
+import java.lang.*;
+import java.io.*;
+
+/* Name of the class has to be "Main" only if the class is public. */
+class Codechef
+{
+    static void convert(String str) 
+    { 
+
+    int h1 = (int)str.charAt(1) - '0'; 
+    int h2 = (int)str.charAt(0) - '0'; 
+    int hh = (h2 * 10 + h1 % 10); 
+
+
+    if (str.charAt(8) == 'A') 
+    { 
+        if (hh == 12) 
+        { 
+            System.out.print("00"); 
+            for (int i = 2; i <= 7; i++) 
+                System.out.print(str.charAt(i)); 
+        } 
+        else
+        { 
+            for (int i = 0; i <= 7; i++) 
+                System.out.print(str.charAt(i)); 
+        } 
+    } 
+
+    else
+    { 
+        if (hh == 12) 
+        { 
+            System.out.print("12"); 
+            for (int i = 2; i <= 7; i++) 
+                System.out.print(str.charAt(i)); 
+        } 
+        else
+        { 
+            hh = hh + 12; 
+            System.out.print(hh); 
+            for (int i = 2; i <= 7; i++) 
+                System.out.print(str.charAt(i)); 
+        } 
+    } 
+    }  
+	public static void main (String[] args) throws java.lang.Exception
+	{
+		// your code goes here
+        Scanner sc = new Scanner(System.in);
+
+        String str = sc.nextLine();
+        convert(str);
+
+
+	}
+}