Requirments are in the DP.java file. Thank u very much

Just need to finish the DP and pass the test ty

DP.java

import java.util.Arrays;

import java.util.HashMap; import java.util.Map; import java.util.WeakHashMap; import java.util.function.BiFunction; import java.util.function.Function; /* * Top down solutions */ class DP { /**  * Given a list of possible coins that must include a penny,  * and a number of pennies 'n', in how many ways can we use the  * coins to make change for 'n'.  */ static int coinChange (List coins, int n) { try { if (n coinChange(coins.getRest(), n) + coinChange(coins,n - coins.getFirst().getValue()); } catch (EmptyListE e) { return 0; // no way to make change } } /**  * We create a hash table making sure it is called coinChangeMemo.  * Each subproblem is determined by the list of coins and by the desired sum.  * That combination should be the key.  */  static Map,Integer>,Integer> coinChangeMemo = new WeakHashMap(); /**  * We use computeIfAbsent. When we communicate with the hash table, we combine  * all the information into a key and take back apart.  */  static int mcoinChange (List coins1, int n1) { return coinChangeMemo.computeIfAbsent(new Pair(coins1,n1), p -> { List coins = p.getFirst(); int n = p.getSecond(); try { if (n mcoinChange(coins.getRest(), n) + mcoinChange(coins, n - coins.getFirst().getValue()); } catch (EmptyListE e) { return 0; // no way to make change } }); } /**  * We now manage the memoization table manually. We can choose  * to represent our memoization table as a WeakHashMap or we can  * represent it as an array or whatever data structure gives efficient  * access to the elements. In class we used a WeakHashMap. Here  * we show how to use an array.  */  static int bucoinChange (List coins, int n) throws EmptyListE { /* The possible lists of coins we will encounter are coins, coins.getRest(), * coins.getRest().getRest(), etc. We will refer to these using * array indices 0, 1, 2, ... * The possible sums we will encounter will be a subset of n, n-1, n-2, ... * We will use these directly as indices into the array */ int len = coins.length()+1; int[][] table = new int[len][n+1]; /* * The entries corresponding to the empty list are initialized with 0 (no solutions) * The entries corresponding to sum=0 are initialized with 1 (one solution) * These two initializations must be done in the given order */ for (int i=0; i=0; c--) { int v = coins.get(c).getValue(); for (int i = 1; i * T/F depending on whether it is possible to find a  * subsequence of the list whose sum is exactly 's'  */  static boolean partition (List s, int sum) { try { return partition(s.getRest(), sum - s.getFirst()) || partition(s.getRest(), sum); } catch (EmptyListE e) { return sum == 0; } } static Map,Integer>,Boolean> partitionMemo = new WeakHashMap(); static boolean mpartition (List s1, int sum1) { return partitionMemo.computeIfAbsent(new Pair(s1, sum1), p -> { List s = p.getFirst(); int sum = p.getSecond(); try { return mpartition(s.getRest(), sum - s.getFirst()) || mpartition(s.getRest(), sum); } catch (EmptyListE e) { return sum == 0; } }); } static boolean bupartition (List s, int sum) { return false; } final static int GAP = 2; final static int MATCH = 0; final static int MISMATCH = 1; enum BASE { A, T, G, C } static int min (int d1, int d2) { return d1 MATCH : MISMATCH; int d1 = current + minDistance(dna1.getRest(), dna2.getRest()); int d2 = GAP + minDistance(dna1.getRest(), dna2); int d3 = GAP + minDistance(dna1, dna2.getRest()); return min(d1,min(d2,d3)); } catch (EmptyListE e) { if (dna1.isEmpty()) return GAP * dna2.length(); else return GAP * dna1.length(); } } static Map%3CBASE%3E,List>,Integer> minDistanceMemo = new WeakHashMap(); static int mminDistance (List dna11, List dna21) { return minDistanceMemo.computeIfAbsent(new Pair(dna11, dna21), p -> { List dna1 = p.getFirst(); List dna2 = p.getSecond(); try { int current = dna1.getFirst() == dna2.getFirst() ? MATCH : MISMATCH; int d1 = current + mminDistance(dna1.getRest(), dna2.getRest()); int d2 = GAP + mminDistance(dna1.getRest(), dna2); int d3 = GAP + mminDistance(dna1, dna2.getRest()); return min(d1,min(d2,d3)); } catch (EmptyListE e) { if (dna1.isEmpty()) return GAP * dna2.length(); else return GAP * dna1.length(); } }); } static int buminDistance (List dna1, List dna2) { return 0; } static List lcs (List cs1, List cs2) { try { if (cs1.getFirst().equals(cs2.getFirst())) { return new Node(cs1.getFirst(), lcs(cs1.getRest(),cs2.getRest())); } else { List r1 = lcs(cs1,cs2.getRest()); List r2 = lcs(cs1.getRest(),cs2); if (r1.length() > r2.length()) return r1; else return r2; } } catch (EmptyListE e) { return new Empty(); } } static Map,List>,List> lcsMemo = new WeakHashMap(); static List mlcs (List cs11, List cs21) { return lcsMemo.computeIfAbsent(new Pair(cs11,cs21), p -> { List cs1 = p.getFirst(); List cs2 = p.getSecond(); try { if (cs1.getFirst().equals(cs2.getFirst())) { return new Node(cs1.getFirst(), mlcs(cs1.getRest(), cs2.getRest())); } else { List r1 = mlcs(cs1, cs2.getRest()); List r2 = mlcs(cs1.getRest(), cs2); if (r1.length() > r2.length()) return r1; else return r2; } } catch (EmptyListE e) { return new Empty(); } }); } static List bulcs (List cs1, List cs2) { return null; } } DPTest.java<>

import org.junit.Test; import java.util.Random; import java.util.function.BiFunction; import java.util.function.Function; import static org.junit.Assert.*; public class DPTest { static long time1(Function f, A a) { long start = System.nanoTime(); f.apply(a); long end = System.nanoTime(); return (end - start) / 1000000; } static long time2(BiFunction f, A a, B b) { long start = System.nanoTime(); f.apply(a, b); long end = System.nanoTime(); return (end - start) / 1000000; } // Testing coinChange correctness and timing @Test public void coinsC() throws EmptyListE { Coin quarter = new Coin(25); Coin dime = new Coin(10); Coin nickel = new Coin(5); Coin penny = new Coin(1); List coins = new Node(quarter, new Node(dime, new Node(nickel, new Node(penny, new Empty())))); assertEquals(1, DP.coinChange(coins, 3)); assertEquals(2, DP.coinChange(coins, 6)); assertEquals(242, DP.coinChange(coins, 100)); assertEquals(1, DP.bucoinChange(coins, 3)); assertEquals(2, DP.bucoinChange(coins, 6)); assertEquals(242, DP.bucoinChange(coins, 100)); } @Test(timeout = 500) public void coinsT1() { List coins = new Node(new Coin(3), new Node(new Coin(2), new Node(new Coin(1), new Empty()))); DP.coinChangeMemo.clear(); DP.mcoinChange(coins, 1000); } // Testing partition correctness and timing @Test public void partitionCorrectness() { List ns = new Node(5, new Node(3, new Node(7, new Node(1, new Empty())))); assertFalse(DP.partition(ns, 2)); assertTrue(DP.partition(ns, 8)); assertTrue(DP.partition(ns, 6)); } @Test public void partitionTiming() { Random r = new Random(1); List s = List.MakeIntList(r, 100, 1000); DP.partitionMemo.clear(); long t = time2(DP::mpartition, s, 50000); assertTrue(t (DP.BASE.A, new Node(DP.BASE.C, new Empty())); List dna2 = new Node(DP.BASE.A, new Node(DP.BASE.G, new Empty())); assertEquals(1, DP.minDistance(dna1, dna2)); } @Test public void minDistance2() { Random r = new Random(1); Function g = v -> DP.BASE.class.getEnumConstants()[r.nextInt(4)]; List dna1 = List.MakeList(g, 521); List dna2 = List.MakeList(g, 450); assertEquals(337, DP.mminDistance(dna1, dna2)); } // longest common subsequence @Test public void lcs() { List cs1 = new Node('A', new Node('B', new Node('C', new Node('B', new Node('D', new Node('A', new Node('B', new Empty()))))))); List cs2 = new Node('B', new Node('D', new Node('C', new Node('A', new Node('B', new Node('A', new Empty())))))); List c = new Node('B', new Node('D', new Node('A', new Node('B', new Empty())))); assertEquals(c, DP.lcs(cs1, cs2)); } @Test public void lcs2() { Random r = new Random(1); Function g = v -> Character.forDigit(r.nextInt(256), 10); List cs1 = List.MakeList(g, 310); List cs2 = List.MakeList(g, 250); assertEquals(240, DP.mlcs(cs1, cs2).length()); } } 

pub lic cLass Coln1 private int value; Coin (int value) this.value value; int getValue ) return value; h @override public boolean equals(Object o) f if (!(o instanceof Coin)) return false; else t Coin that-(Coin) o; return value = that . value; @Override public int hashCode() return value; @override public String toStringtreturn "@" +value;h import java.utiL.Random iort java.util.function.Function; class EmptyListE extends Exception th abstract class List static List singleton (E e) t return new Node(e, new Empty>)); static List MakeList (Function g, int size) List result = new Empty(); for (int = 0; (g.apply( t: null), result); return result: static List MakeIntList (Random r, int bound, int size) return MakeList( (v) List push (E elem) return new Node(elem, rest: this); abstract E getFirst ) throws EmptyListE; abstract List getRest () throws EmptyListE; abstract E get (int i) throws EmptyListE abstract boolean isEmpty; abstract boolean isSingleton) abstract int length); abstract List add (E elem) abstract Listreverse() abstract List append (List other); abstract List map (Function f); abstract List insertByKey (E elem, FunctionE, Double> key); abstract List sort (FunctionE, Double> key); class Emptyextends List E getFirst throws EmptyListE t throw new EmptyListE); List getRest () throws EmptyListE throw new EmptyListEO; E get (int i) throws EmptyListE throw new EmptyListE); boolean isEmpty) retur boolean isSingleton ) return false; h int length) return 0; h List add (E elem) t return new Node>(elem, rest: this); List reverse()t return this; List append (List other) return other; ) List map (Function f) t return new Empty); n true;h List List 1nsertBykey (E etem, Function,Double> key) sort (FunctionE , Double> key) { return this; return { } new Node (elem, new Empty()); public boolean equals (0bject o) return o instanceof Empty; public int hashCode() return 0; public String toString ) t return "_"; h class Node private E data; private List rest; Node (E data, List rest) t this.data = data; this.rest-rest; E getFirst )t return data; ) List getRest () t return rest;h E get (int i) throws EmptyListE { if (i0) return data; else return rest.get (i-1); boolean isEmpty () return false; ) boolean isSingleton ()t return rest.isEmpty(); h int length) t return 1+ rest.length); List add (E elem) return new Node>(data, rest.add(elem)); List reverse )f return rest.reverse().add (data); List append (List other) T return new Node (data, rest.append(other)); List map (Function f) return new Node>(f.apply(data), rest.map(f)); List insertByKey (E elem, Function key) if (key.apply (elem) (data, rest.insertByKey (elem, key)); | List sort (FunctionE,Double> key) { return rest. sort (key), insertByKey(data, key); } public boolean equals (0bject o) if (! (o instanceof Node)) return false; else t de that(Node) o return data.equals (that.data) && rest.equals(that.rest); No public int hashCode() return data.hashCode() + rest.hashCode(); h public String toString return data "," rest; h class Pair private A a; private B b; Pair (A a, Bb)f this.a - a; this.b b; A getFirst t return a; B getSecondt return b; @override public boolean equals(Object o) if (!(o instanceof Pair)) return false; else Pair that (Pair) o return a.equals (that.a) && b.equals(that.b); @override public int hashCode() return a.hashCode() + b.hashCode();h @override public String toString () { return " static List singleton (E e) t return new Node(e, new Empty>)); static List MakeList (Function g, int size) List result = new Empty(); for (int = 0; (g.apply( t: null), result); return result: static List MakeIntList (Random r, int bound, int size) return MakeList( (v) List push (E elem) return new Node(elem, rest: this); abstract E getFirst ) throws EmptyListE; abstract List getRest () throws EmptyListE; abstract E get (int i) throws EmptyListE abstract boolean isEmpty; abstract boolean isSingleton) abstract int length); abstract List add (E elem) abstract Listreverse() abstract List append (List other); abstract List map (Function f); abstract List insertByKey (E elem, FunctionE, Double> key); abstract List sort (FunctionE, Double> key); class Emptyextends List E getFirst throws EmptyListE t throw new EmptyListE); List getRest () throws EmptyListE throw new EmptyListEO; E get (int i) throws EmptyListE throw new EmptyListE); boolean isEmpty) retur boolean isSingleton ) return false; h int length) return 0; h List add (E elem) t return new Node>(elem, rest: this); List reverse()t return this; List append (List other) return other; ) List map (Function f) t return new Empty); n true;h List List 1nsertBykey (E etem, Function,Double> key) sort (FunctionE , Double> key) { return this; return { } new Node (elem, new Empty()); public boolean equals (0bject o) return o instanceof Empty; public int hashCode() return 0; public String toString ) t return "_"; h class Node private E data; private List rest; Node (E data, List rest) t this.data = data; this.rest-rest; E getFirst )t return data; ) List getRest () t return rest;h E get (int i) throws EmptyListE { if (i0) return data; else return rest.get (i-1); boolean isEmpty () return false; ) boolean isSingleton ()t return rest.isEmpty(); h int length) t return 1+ rest.length); List add (E elem) return new Node>(data, rest.add(elem)); List reverse )f return rest.reverse().add (data); List append (List other) T return new Node (data, rest.append(other)); List map (Function f) return new Node>(f.apply(data), rest.map(f)); List insertByKey (E elem, Function key) if (key.apply (elem) (data, rest.insertByKey (elem, key)); | List sort (FunctionE,Double> key) { return rest. sort (key), insertByKey(data, key); } public boolean equals (0bject o) if (! (o instanceof Node)) return false; else t de that(Node) o return data.equals (that.data) && rest.equals(that.rest); No public int hashCode() return data.hashCode() + rest.hashCode(); h public String toString return data "," rest; h class Pair private A a; private B b; Pair (A a, Bb)f this.a - a; this.b b; A getFirst t return a; B getSecondt return b; @override public boolean equals(Object o) if (!(o instanceof Pair)) return false; else Pair that (Pair) o return a.equals (that.a) && b.equals(that.b); @override public int hashCode() return a.hashCode() + b.hashCode();h @override public String toString () { return "