me/prog-intro-2025
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

initial commit

Browse Source
This commit is contained in:
Doschennikov Nikita
2026-01-29 23:20:12 +05:00
parent fb1ce36970
commit 67357cf271
76 changed files with 7115 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

190
java/expression/TripleExpression.java Normal file
View File

@@ -0,0 +1,190 @@
package expression;
import base.ExtendedRandom;
import base.Pair;
import base.Selector;
import base.TestCounter;
import expression.common.ExpressionKind;
import expression.common.Type;
import java.util.List;
/**
* Three-argument arithmetic expression over integers.
*
* @author Georgiy Korneev (kgeorgiy@kgeorgiy.info)
*/
@FunctionalInterface
@SuppressWarnings("ClassReferencesSubclass")
public interface TripleExpression extends ToMiniString {
int evaluate(int x, int y, int z);
// Tests follow. You may temporarily remove everything til the end.
Type<Integer> TYPE = new Type<>(a -> a, ExtendedRandom::nextInt, int.class);
ExpressionKind<TripleExpression, Integer> KIND = new ExpressionKind<>(
TYPE,
TripleExpression.class,
List.of(
Pair.of("x", new Variable("x")),
Pair.of("y", new Variable("y")),
Pair.of("z", new Variable("z"))
),
(expr, variables, values) -> expr.evaluate(values.get(0), values.get(1), values.get(2))
);
@SuppressWarnings("PointlessArithmeticExpression")
static ExpressionTester<?, ?> tester(final TestCounter counter) {
final Variable vx = new Variable("x");
final Variable vy = new Variable("y");
final Variable vz = new Variable("z");
return new ExpressionTester<>(
counter, KIND, c -> (x, y, z) -> c,
(op, a, b) -> (x, y, z) -> op.apply(a.evaluate(x, y, z), b.evaluate(x, y, z)),
Integer::sum, (a, b) -> a - b, (a, b) -> a * b, (a, b) -> a / b
)
.basic("10", "10", (x, y, z) -> 10, c(10))
.basic("x", "x", (x, y, z) -> x, vx)
.basic("y", "y", (x, y, z) -> y, vy)
.basic("z", "z", (x, y, z) -> z, vz)
.basic("(x + 2)", "x + 2", (x, y, z) -> x + 2, new Add(vx, c(2)))
.basic("(2 - y)", "2 - y", (x, y, z) -> 2 - y, new Subtract(c(2), vy))
.basic("(3 * z)", "3 * z", (x, y, z) -> 3 * z, new Multiply(c(3), vz))
.basic("(x / -2)", "x / -2", (x, y, z) -> -x / 2, new Divide(vx, c(-2)))
.basic("((1 + 2) + 3)", "1 + 2 + 3", (x, y, z) -> 6, new Add(new Add(c(1), c(2)), c(3)))
.basic("(1 + (2 + 3))", "1 + 2 + 3", (x, y, z) -> 6, new Add(c(1), new Add(c(2), c(3))))
.basic("((1 - 2) - 3)", "1 - 2 - 3", (x, y, z) -> -4, new Subtract(new Subtract(c(1), c(2)), c(3)))
.basic("(1 - (2 - 3))", "1 - (2 - 3)", (x, y, z) -> 2, new Subtract(c(1), new Subtract(c(2), c(3))))
.basic("((1 * 2) * 3)", "1 * 2 * 3", (x, y, z) -> 6, new Multiply(new Multiply(c(1), c(2)), c(3)))
.basic("(1 * (2 * 3))", "1 * 2 * 3", (x, y, z) -> 6, new Multiply(c(1), new Multiply(c(2), c(3))))
.basic("((10 / 2) / 3)", "10 / 2 / 3", (x, y, z) -> 10 / 2 / 3, new Divide(new Divide(c(10), c(2)), c(3)))
.basic("(10 / (3 / 2))", "10 / (3 / 2)", (x, y, z) -> 10, new Divide(c(10), new Divide(c(3), c(2))))
.basic("((x * y) + ((z - 1) / 10))", "x * y + (z - 1) / 10", (x, y, z) -> x * y + (z - 1) / 10, new Add(
new Multiply(vx, vy),
new Divide(new Subtract(vz, c(1)), c(10))
))
.basic("(x + y)", "x + y", (x, y, z) -> x + y, new Add(vx, vy))
.basic("(y + x)", "y + x", (x, y, z) -> y + x, new Add(vy, vx))
.advanced("(1 + 1)", "1 + 1", (x, y, z) -> 1 + 1, new Add(c(1), c(1)))
.advanced("(y - x)", "y - x", (x, y, z) -> y - x, new Subtract(vy, vx))
.advanced("(2 * x)", "2 * x", (x, y, z) -> 2 * x, new Multiply(c(2), vx))
.advanced("(2 / x)", "2 / x", (x, y, z) -> 2 / x, new Divide(c(2), vx))
.advanced("(z + (1 + 1))", "z + 1 + 1", (x, y, z) -> z + 1 + 1, new Add(vz, new Add(c(1), c(1))))
.advanced(
"(2 - (y - x))",
"2 - (y - x)",
(x, y, z) -> 2 - (y - x),
new Subtract(c(2), new Subtract(vy, vx))
)
.advanced(
"(z * (2 / x))",
"z * (2 / x)",
(x, y, z) -> z * (2 / x),
new Multiply(vz, new Divide(c(2), vx))
)
.advanced(
"(z / (y - x))",
"z / (y - x)",
(x, y, z) -> z / (y - x),
new Divide(vz, new Subtract(vy, vx))
)
.advanced("((2 * x) + y)", "2 * x + y", (x, y, z) -> 2 * x + y, new Add(new Multiply(c(2), vx), vy))
.advanced(
"((y - x) - 2)",
"y - x - 2",
(x, y, z) -> y - x - 2,
new Subtract(new Subtract(vy, vx), c(2))
)
.advanced("((2 / x) * y)", "2 / x * y", (x, y, z) -> 2 / x * y, new Multiply(new Divide(c(2), vx), vy))
.advanced("((1 + 1) / x)", "(1 + 1) / x", (x, y, z) -> (1 + 1) / x, new Divide(new Add(c(1), c(1)), vx))
.advanced("(1 + (2 * 3))", "1 + 2 * 3", (x, y, z) -> 7, new Add(c(1), new Multiply(c(2), c(3))))
.advanced("(1 - (2 * 3))", "1 - 2 * 3", (x, y, z) -> -5, new Subtract(c(1), new Multiply(c(2), c(3))))
.advanced("(1 + (2 / 3))", "1 + 2 / 3", (x, y, z) -> 1, new Add(c(1), new Divide(c(2), c(3))))
.advanced("(1 - (2 / 3))", "1 - 2 / 3", (x, y, z) -> 1, new Subtract(c(1), new Divide(c(2), c(3))))
.advanced(
"(2 + (z + (1 + 1)))",
"2 + z + 1 + 1",
(x, y, z) -> 2 + z + 1 + 1,
new Add(c(2), new Add(vz, new Add(c(1), c(1))))
)
.advanced(
"(1 - ((2 * x) + y))",
"1 - (2 * x + y)",
(x, y, z) -> 1 - (2 * x + y),
new Subtract(c(1), new Add(new Multiply(c(2), vx), vy))
)
.advanced(
"(1 * (z / (y - x)))",
"1 * (z / (y - x))",
(x, y, z) -> 1 * (z / (y - x)),
new Multiply(c(1), new Divide(vz, new Subtract(vy, vx)))
)
.advanced(
"(z / (z + (1 + 1)))",
"z / (z + 1 + 1)",
(x, y, z) -> z / (z + 1 + 1),
new Divide(vz, new Add(vz, new Add(c(1), c(1))))
)
.advanced(
"((2 * x) + (1 + 1))",
"2 * x + 1 + 1",
(x, y, z) -> 2 * x + 1 + 1,
new Add(new Multiply(c(2), vx), new Add(c(1), c(1)))
)
.advanced(
"((1 + 1) - (1 + 1))",
"1 + 1 - (1 + 1)",
(x, y, z) -> 1 + 1 - (1 + 1),
new Subtract(new Add(c(1), c(1)), new Add(c(1), c(1)))
)
.advanced(
"((y - x) * (2 / x))",
"(y - x) * (2 / x)",
(x, y, z) -> (y - x) * (2 / x),
new Multiply(new Subtract(vy, vx), new Divide(c(2), vx))
)
.advanced(
"((y - x) / (2 * x))",
"(y - x) / (2 * x)",
(x, y, z) -> (y - x) / (2 * x),
new Divide(new Subtract(vy, vx), new Multiply(c(2), vx))
)
.advanced(
"(((y - x) - 2) + 1)",
"y - x - 2 + 1",
(x, y, z) -> y - x - 2 + 1,
new Add(new Subtract(new Subtract(vy, vx), c(2)), c(1))
)
.advanced(
"(((2 * x) + y) - z)",
"2 * x + y - z",
(x, y, z) -> 2 * x + y - z,
new Subtract(new Add(new Multiply(c(2), vx), vy), vz)
)
.advanced(
"(((1 + 1) / x) * 2)",
"(1 + 1) / x * 2",
(x, y, z) -> (1 + 1) / x * 2,
new Multiply(new Divide(new Add(c(1), c(1)), vx), c(2))
)
.advanced(
"((z / (y - x)) / x)",
"z / (y - x) / x",
(x, y, z) -> z / (y - x) / x,
new Divide(new Divide(vz, new Subtract(vy, vx)), vx)
);
}
private static Const c(final Integer c) {
return TYPE.constant(c);
}
Selector SELECTOR = ExpressionTest.SELECTOR
.variant("Triple", ExpressionTest.v(TripleExpression::tester));
static void main(final String... args) {
TripleExpression.SELECTOR.main(args);
}
}