@Test
public void splitLookup() {
// do the split
int pivot = 4;
int max = 5;
List<Integer> l = List.range(1, max + 1);
TreeMap<Integer, String> m2 = TreeMap.treeMap(Ord.intOrd, l.zip(l.map(i -> i.toString())));
P3<TreeMap<Integer, String>, Option<String>, TreeMap<Integer, String>> p3 =
m2.splitLookup(pivot);
// create expected output
List<Integer> leftList = List.range(1, pivot);
TreeMap<Integer, String> leftMap =
TreeMap.treeMap(Ord.intOrd, leftList.zip(leftList.map(i -> i.toString())));
List<Integer> rightList = List.range(pivot + 1, max + 1);
TreeMap<Integer, String> rightMap =
TreeMap.treeMap(Ord.intOrd, rightList.zip(rightList.map(i -> i.toString())));
// debug info
if (true) {
Show<TreeMap<Integer, String>> st = Show.treeMapShow(Show.intShow, Show.stringShow);
Show<P3<TreeMap<Integer, String>, Option<String>, TreeMap<Integer, String>>> sp3 =
Show.p3Show(st, Show.optionShow(Show.stringShow), st);
sp3.println(p3);
}
// do the assert
Equal<TreeMap<Integer, String>> tme = Equal.treeMapEqual(Equal.intEqual, Equal.stringEqual);
Equal<P3<TreeMap<Integer, String>, Option<String>, TreeMap<Integer, String>>> eq =
Equal.p3Equal(tme, Equal.optionEqual(Equal.stringEqual), tme);
assertTrue(eq.eq(p3, p(leftMap, some(Integer.toString(pivot)), rightMap)));
}
@Test
public void split() {
// do the split
int pivot = 4;
int max = 5;
List<Integer> l = List.range(1, max + 1);
TreeMap<Integer, String> m2 = TreeMap.treeMap(Ord.intOrd, l.zip(l.map(i -> i.toString())));
P3<Set<String>, Option<String>, Set<String>> p = m2.split(Ord.stringOrd, pivot);
// print debug info
Show<TreeMap<Integer, String>> st = Show.treeMapShow(Show.intShow, Show.stringShow);
Show<Set<String>> ss = Show.setShow(Show.stringShow);
Show<Option<String>> so = Show.optionShow(Show.stringShow);
Show<P3<Set<String>, Option<String>, Set<String>>> sp3 = Show.p3Show(ss, so, ss);
if (true) {
st.println(m2);
sp3.println(p);
}
// assert equals
Equal<Set<String>> seq = Equal.setEqual(Equal.stringEqual);
Set<String> left = toSetString(List.range(1, pivot));
Set<String> right = toSetString(List.range(pivot + 1, max + 1));
P3<Set<String>, Option<String>, Set<String>> expected =
p(left, some(Integer.toString(pivot)), right);
assertTrue(Equal.p3Equal(seq, Equal.optionEqual(Equal.stringEqual), seq).eq(p, expected));
}
public HashMap(java.util.Map<K, V> map) {
this(map, Equal.anyEqual(), Hash.anyHash());
}
/** Converts the Iterable to a HashMap */
public static <K, V> HashMap<K, V> iterableHashMap(final Iterable<P2<K, V>> entries) {
return iterableHashMap(Equal.anyEqual(), Hash.anyHash(), entries);
}
public static <K, V> HashMap<K, V> fromMap(java.util.Map<K, V> map) {
return fromMap(Equal.anyEqual(), Hash.anyHash(), map);
}
public <A> HashMap<A, V> mapKeys(F<K, A> function) {
return mapKeys(function, Equal.anyEqual(), Hash.anyHash());
}
public <A, B> HashMap<A, B> map(F<K, A> keyFunction, F<V, B> valueFunction) {
return map(keyFunction, valueFunction, Equal.anyEqual(), Hash.anyHash());
}
/**
* Compare two key values for equality using the underlying equality strategy.
*
* @param k1 One key value to compare.
* @param k2 The other key value to compare.
* @return <code>true</code> if the two key values are equal, <code>false</code> otherwise.
*/
public boolean eq(final K k1, final K k2) {
return e.eq(k1, k2);
}
/**
* Construct a hash map that uses {@link Object#equals} and {@link Object#hashCode}.
*
* @return A new hash map that uses {@link Object#equals} and {@link Object#hashCode}.
*/
public static <K, V> HashMap<K, V> hashMap() {
return hashMap(Equal.anyEqual(), Hash.anyHash());
}
@Override
public boolean equals(Object other) {
return Equal.equals0(Tree.class, this, other, () -> Equal.treeEqual(Equal.anyEqual()));
}
/**
* Perform an equality test on this list which delegates to the .equals() method of the member
* instances. This is implemented with Equal.nonEmptyListEqual using the anyEqual rule.
*
* @param obj the other object to check for equality against.
* @return true if this list is equal to the provided argument
*/
@Override
public boolean equals(final Object obj) {
return Equal.equals0(
NonEmptyList.class, this, obj, () -> Equal.nonEmptyListEqual(Equal.<A>anyEqual()));
}