Computers and Technology, 10.11.2020 02:00 lenzner14
3. Describe what is happening in this code
import java. util. Scanner;
public class WordFinder {
public static void main(String[] args) {
Scanner s = new Scanner(System. in);
System. out. println ("Please enter a word");
String usrWord = s. nextLine();
String alph = ("");
for(int i = alph. length () - 1; i >= 0; i--){
System. out. println(alph. charAt (i) + usrWord);
}
}
}
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Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?
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3. Describe what is happening in this code
import java. util. Scanner;
public class Wor...
public class Wor...
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