Add BandwidthAllocation algorithm (#5807)

src/test/java/com/thealgorithms/greedyalgorithms/BandwidthAllocationTest.java

@@ -0,0 +1,22 @@
+package com.thealgorithms.greedyalgorithms;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.stream.Stream;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+
+public class BandwidthAllocationTest {
+
+    @ParameterizedTest
+    @MethodSource("bandwidthProvider")
+    public void testMaxValue(int capacity, int[] bandwidths, int[] values, int expected) {
+        assertEquals(expected, BandwidthAllocation.maxValue(capacity, bandwidths, values));
+    }
+
+    private static Stream<Arguments> bandwidthProvider() {
+        return Stream.of(Arguments.of(50, new int[] {20, 10, 30}, new int[] {40, 20, 30}, 80), Arguments.of(0, new int[] {5, 10}, new int[] {10, 20}, 0), Arguments.of(5, new int[] {5, 10}, new int[] {10, 20}, 10), Arguments.of(15, new int[] {10, 20}, new int[] {10, 25}, 18),
+            Arguments.of(25, new int[] {10, 15, 20}, new int[] {10, 30, 50}, 60));
+    }
+}