stream solution (not optimized)

src/main/java/Solution.java

@@ -1,20 +1,26 @@
 import java.util.*;
-import java.io.*;
+import java.util.stream.*;
-import java.math.*;
 
-/**
- * Template code to help you parse the standard input 
- * according to the problem statement.
- **/
 class Solution {
 	
 	public static void main( String[] args ) {
-		Scanner in = new Scanner( System.in );
 		// read values with in.next...() methods
+		var prices = new Scanner( System.in ).tokens()
+				.mapToInt( Integer::valueOf )
+				.toArray();
 		
 		// code your solution here
+		var maxProfit = IntStream.range( 0, prices.length )
+				.map( index -> {
+					var range = Arrays.copyOfRange( prices, index, prices.length );
+					var max = IntStream.of( range ).max().orElse( 0 );
+					// difference between current price and future maximum
+					return max - prices[index];
+				})
+				.max().orElse( 0 );
 		
 		// Write result with System.out.println()
-		System.out.println( "value" );
+		System.out.println( maxProfit );
 	}
+	
 }