Merge branch 'master' into kibolho/missing_number

Author: kibolho

Diff for: .github/ISSUE_TEMPLATE/feature_request.yml

@@ -6,14 +6,14 @@ body:
     attributes:
       value: >
         Before requesting please search [existing issues](https://github.com/TheAlgorithms/Python/labels/enhancement).
+        Do not create issues to implement new algorithms as these will be closed.
         Usage questions such as "How do I...?"  belong on the
         [Discord](https://discord.gg/c7MnfGFGa6) and will be closed.
 
   - type: textarea
     attributes:
       label: "Feature description"
       description: >
-        This could be new algorithms, data structures or improving any existing
-        implementations.
+        This could include new topics or improving any existing implementations.
     validations:
       required: true

Diff for: DIRECTORY.md

@@ -63,7 +63,9 @@
 
 ## Boolean Algebra
   * [And Gate](boolean_algebra/and_gate.py)
+  * [Imply Gate](boolean_algebra/imply_gate.py)
   * [Nand Gate](boolean_algebra/nand_gate.py)
+  * [Nimply Gate](boolean_algebra/nimply_gate.py)
   * [Nor Gate](boolean_algebra/nor_gate.py)
   * [Not Gate](boolean_algebra/not_gate.py)
   * [Or Gate](boolean_algebra/or_gate.py)
@@ -119,9 +121,9 @@
   * [Shuffled Shift Cipher](ciphers/shuffled_shift_cipher.py)
   * [Simple Keyword Cypher](ciphers/simple_keyword_cypher.py)
   * [Simple Substitution Cipher](ciphers/simple_substitution_cipher.py)
-  * [Trafid Cipher](ciphers/trafid_cipher.py)
   * [Transposition Cipher](ciphers/transposition_cipher.py)
   * [Transposition Cipher Encrypt Decrypt File](ciphers/transposition_cipher_encrypt_decrypt_file.py)
+  * [Trifid Cipher](ciphers/trifid_cipher.py)
   * [Vigenere Cipher](ciphers/vigenere_cipher.py)
   * [Xor Cipher](ciphers/xor_cipher.py)
 
@@ -174,10 +176,13 @@
 ## Data Structures
   * Arrays
     * [Equilibrium Index In Array](data_structures/arrays/equilibrium_index_in_array.py)
+    * [Find Triplets With 0 Sum](data_structures/arrays/find_triplets_with_0_sum.py)
     * [Median Two Array](data_structures/arrays/median_two_array.py)
+    * [Pairs With Given Sum](data_structures/arrays/pairs_with_given_sum.py)
     * [Permutations](data_structures/arrays/permutations.py)
     * [Prefix Sum](data_structures/arrays/prefix_sum.py)
     * [Product Sum](data_structures/arrays/product_sum.py)
+    * [Sparse Table](data_structures/arrays/sparse_table.py)
   * Binary Tree
     * [Avl Tree](data_structures/binary_tree/avl_tree.py)
     * [Basic Binary Tree](data_structures/binary_tree/basic_binary_tree.py)
@@ -261,6 +266,7 @@
     * [Postfix Evaluation](data_structures/stacks/postfix_evaluation.py)
     * [Prefix Evaluation](data_structures/stacks/prefix_evaluation.py)
     * [Stack](data_structures/stacks/stack.py)
+    * [Stack Using Two Queues](data_structures/stacks/stack_using_two_queues.py)
     * [Stack With Doubly Linked List](data_structures/stacks/stack_with_doubly_linked_list.py)
     * [Stack With Singly Linked List](data_structures/stacks/stack_with_singly_linked_list.py)
     * [Stock Span Problem](data_structures/stacks/stock_span_problem.py)
@@ -335,6 +341,7 @@
   * [Longest Increasing Subsequence O(Nlogn)](dynamic_programming/longest_increasing_subsequence_o(nlogn).py)
   * [Longest Palindromic Subsequence](dynamic_programming/longest_palindromic_subsequence.py)
   * [Longest Sub Array](dynamic_programming/longest_sub_array.py)
+  * [Matrix Chain Multiplication](dynamic_programming/matrix_chain_multiplication.py)
   * [Matrix Chain Order](dynamic_programming/matrix_chain_order.py)
   * [Max Non Adjacent Sum](dynamic_programming/max_non_adjacent_sum.py)
   * [Max Product Subarray](dynamic_programming/max_product_subarray.py)
@@ -357,18 +364,21 @@
   * [Trapped Water](dynamic_programming/trapped_water.py)
   * [Tribonacci](dynamic_programming/tribonacci.py)
   * [Viterbi](dynamic_programming/viterbi.py)
+  * [Wildcard Matching](dynamic_programming/wildcard_matching.py)
   * [Word Break](dynamic_programming/word_break.py)
 
 ## Electronics
   * [Apparent Power](electronics/apparent_power.py)
   * [Builtin Voltage](electronics/builtin_voltage.py)
   * [Carrier Concentration](electronics/carrier_concentration.py)
   * [Charging Capacitor](electronics/charging_capacitor.py)
+  * [Charging Inductor](electronics/charging_inductor.py)
   * [Circular Convolution](electronics/circular_convolution.py)
   * [Coulombs Law](electronics/coulombs_law.py)
   * [Electric Conductivity](electronics/electric_conductivity.py)
   * [Electric Power](electronics/electric_power.py)
   * [Electrical Impedance](electronics/electrical_impedance.py)
+  * [Ic 555 Timer](electronics/ic_555_timer.py)
   * [Ind Reactance](electronics/ind_reactance.py)
   * [Ohms Law](electronics/ohms_law.py)
   * [Real And Reactive Power](electronics/real_and_reactive_power.py)
@@ -385,6 +395,7 @@
 
 ## Financial
   * [Equated Monthly Installments](financial/equated_monthly_installments.py)
+  * [Exponential Moving Average](financial/exponential_moving_average.py)
   * [Interest](financial/interest.py)
   * [Present Value](financial/present_value.py)
   * [Price Plus Tax](financial/price_plus_tax.py)
@@ -516,6 +527,7 @@
   * [Simplex](linear_programming/simplex.py)
 
 ## Machine Learning
+  * [Apriori Algorithm](machine_learning/apriori_algorithm.py)
   * [Astar](machine_learning/astar.py)
   * [Data Transformations](machine_learning/data_transformations.py)
   * [Decision Tree](machine_learning/decision_tree.py)
@@ -617,6 +629,7 @@
   * [Is Ip V4 Address Valid](maths/is_ip_v4_address_valid.py)
   * [Is Square Free](maths/is_square_free.py)
   * [Jaccard Similarity](maths/jaccard_similarity.py)
+  * [Joint Probability Distribution](maths/joint_probability_distribution.py)
   * [Juggler Sequence](maths/juggler_sequence.py)
   * [Karatsuba](maths/karatsuba.py)
   * [Krishnamurthy Number](maths/krishnamurthy_number.py)
@@ -671,6 +684,7 @@
   * [Radix2 Fft](maths/radix2_fft.py)
   * [Remove Digit](maths/remove_digit.py)
   * [Runge Kutta](maths/runge_kutta.py)
+  * [Runge Kutta Fehlberg 45](maths/runge_kutta_fehlberg_45.py)
   * [Segmented Sieve](maths/segmented_sieve.py)
   * Series
     * [Arithmetic](maths/series/arithmetic.py)
@@ -688,6 +702,7 @@
   * [Sin](maths/sin.py)
   * [Sock Merchant](maths/sock_merchant.py)
   * [Softmax](maths/softmax.py)
+  * [Solovay Strassen Primality Test](maths/solovay_strassen_primality_test.py)
   * [Square Root](maths/square_root.py)
   * [Sum Of Arithmetic Series](maths/sum_of_arithmetic_series.py)
   * [Sum Of Digits](maths/sum_of_digits.py)
@@ -728,6 +743,7 @@
   * [Spiral Print](matrix/spiral_print.py)
   * Tests
     * [Test Matrix Operation](matrix/tests/test_matrix_operation.py)
+  * [Validate Sudoku Board](matrix/validate_sudoku_board.py)
 
 ## Networking Flow
   * [Ford Fulkerson](networking_flow/ford_fulkerson.py)
@@ -781,7 +797,7 @@
 
 ## Physics
   * [Altitude Pressure](physics/altitude_pressure.py)
-  * [Archimedes Principle](physics/archimedes_principle.py)
+  * [Archimedes Principle Of Buoyant Force](physics/archimedes_principle_of_buoyant_force.py)
   * [Basic Orbital Capture](physics/basic_orbital_capture.py)
   * [Casimir Effect](physics/casimir_effect.py)
   * [Centripetal Force](physics/centripetal_force.py)
@@ -803,6 +819,7 @@
   * [Rms Speed Of Molecule](physics/rms_speed_of_molecule.py)
   * [Shear Stress](physics/shear_stress.py)
   * [Speed Of Sound](physics/speed_of_sound.py)
+  * [Speeds Of Gas Molecules](physics/speeds_of_gas_molecules.py)
 
 ## Project Euler
   * Problem 001
@@ -1106,6 +1123,7 @@
 ## Scheduling
   * [First Come First Served](scheduling/first_come_first_served.py)
   * [Highest Response Ratio Next](scheduling/highest_response_ratio_next.py)
+  * [Job Sequence With Deadline](scheduling/job_sequence_with_deadline.py)
   * [Job Sequencing With Deadline](scheduling/job_sequencing_with_deadline.py)
   * [Multi Level Feedback Queue](scheduling/multi_level_feedback_queue.py)
   * [Non Preemptive Shortest Job First](scheduling/non_preemptive_shortest_job_first.py)
@@ -1193,6 +1211,7 @@
   * [Capitalize](strings/capitalize.py)
   * [Check Anagrams](strings/check_anagrams.py)
   * [Credit Card Validator](strings/credit_card_validator.py)
+  * [Damerau Levenshtein Distance](strings/damerau_levenshtein_distance.py)
   * [Detecting English Programmatically](strings/detecting_english_programmatically.py)
   * [Dna](strings/dna.py)
   * [Frequency Finder](strings/frequency_finder.py)
@@ -1225,6 +1244,7 @@
   * [String Switch Case](strings/string_switch_case.py)
   * [Strip](strings/strip.py)
   * [Text Justification](strings/text_justification.py)
+  * [Title](strings/title.py)
   * [Top K Frequent Words](strings/top_k_frequent_words.py)
   * [Upper](strings/upper.py)
   * [Wave](strings/wave.py)

Diff for: arithmetic_analysis/lu_decomposition.py

@@ -88,15 +88,19 @@ def lower_upper_decomposition(table: np.ndarray) -> tuple[np.ndarray, np.ndarray
 
     lower = np.zeros((rows, columns))
     upper = np.zeros((rows, columns))
+
+    # in 'total', the necessary data is extracted through slices
+    # and the sum of the products is obtained.
+
     for i in range(columns):
         for j in range(i):
-            total = sum(lower[i][k] * upper[k][j] for k in range(j))
+            total = np.sum(lower[i, :i] * upper[:i, j])
             if upper[j][j] == 0:
                 raise ArithmeticError("No LU decomposition exists")
             lower[i][j] = (table[i][j] - total) / upper[j][j]
         lower[i][i] = 1
         for j in range(i, columns):
-            total = sum(lower[i][k] * upper[k][j] for k in range(j))
+            total = np.sum(lower[i, :i] * upper[:i, j])
             upper[i][j] = table[i][j] - total
     return lower, upper
 

Diff for: backtracking/power_sum.py

@@ -6,8 +6,6 @@
 The only solution is 2^2+3^2. Constraints: 1<=X<=1000, 2<=N<=10.
 """
 
-from math import pow
-
 
 def backtrack(
     needed_sum: int,
@@ -19,25 +17,25 @@ def backtrack(
     """
     >>> backtrack(13, 2, 1, 0, 0)
     (0, 1)
-    >>> backtrack(100, 2, 1, 0, 0)
-    (0, 3)
-    >>> backtrack(100, 3, 1, 0, 0)
+    >>> backtrack(10, 2, 1, 0, 0)
+    (0, 1)
+    >>> backtrack(10, 3, 1, 0, 0)
+    (0, 0)
+    >>> backtrack(20, 2, 1, 0, 0)
     (0, 1)
-    >>> backtrack(800, 2, 1, 0, 0)
-    (0, 561)
-    >>> backtrack(1000, 10, 1, 0, 0)
+    >>> backtrack(15, 10, 1, 0, 0)
     (0, 0)
-    >>> backtrack(400, 2, 1, 0, 0)
-    (0, 55)
-    >>> backtrack(50, 1, 1, 0, 0)
-    (0, 3658)
+    >>> backtrack(16, 2, 1, 0, 0)
+    (0, 1)
+    >>> backtrack(20, 1, 1, 0, 0)
+    (0, 64)
     """
     if current_sum == needed_sum:
         # If the sum of the powers is equal to needed_sum, then we have a solution.
         solutions_count += 1
         return current_sum, solutions_count
 
-    i_to_n = int(pow(current_number, power))
+    i_to_n = current_number**power
     if current_sum + i_to_n <= needed_sum:
         # If the sum of the powers is less than needed_sum, then continue adding powers.
         current_sum += i_to_n
@@ -57,17 +55,17 @@ def solve(needed_sum: int, power: int) -> int:
     """
     >>> solve(13, 2)
     1
-    >>> solve(100, 2)
-    3
-    >>> solve(100, 3)
+    >>> solve(10, 2)
     1
-    >>> solve(800, 2)
-    561
-    >>> solve(1000, 10)
+    >>> solve(10, 3)
     0
-    >>> solve(400, 2)
-    55
-    >>> solve(50, 1)
+    >>> solve(20, 2)
+    1
+    >>> solve(15, 10)
+    0
+    >>> solve(16, 2)
+    1
+    >>> solve(20, 1)
     Traceback (most recent call last):
         ...
     ValueError: Invalid input

Diff for: bit_manipulation/missing_number.py

@@ -17,14 +17,22 @@ def find_missing_number(nums: list[int]) -> int:
         Traceback (most recent call last):
         ...
         ValueError: negative values not supported
+        >>> find_missing_number([1, 3, 4, 5, 6])
+        2
+        >>> find_missing_number([6, 5, 4, 2, 1])
+        3
+        >>> find_missing_number([6, 1, 5, 3, 4])
+        2
     """
-    n = len(nums)
-    missing_number = n
+    low = min(nums)
+    high = max(nums)
+    missing_number = high
 
-    for i in range(n):
-        if nums[i] < 0:
+    for i in range(low, high):
+        index = i - low
+        if nums[index] < 0:
             raise ValueError("negative values not supported")
-        missing_number ^= i ^ nums[i]
+        missing_number ^= i ^ nums[index]
 
     return missing_number
 

Diff for: boolean_algebra/and_gate.py

@@ -32,19 +32,7 @@ def and_gate(input_1: int, input_2: int) -> int:
     return int((input_1, input_2).count(0) == 0)
 
 
-def test_and_gate() -> None:
-    """
-    Tests the and_gate function
-    """
-    assert and_gate(0, 0) == 0
-    assert and_gate(0, 1) == 0
-    assert and_gate(1, 0) == 0
-    assert and_gate(1, 1) == 1
-
-
 if __name__ == "__main__":
-    test_and_gate()
-    print(and_gate(1, 0))
-    print(and_gate(0, 0))
-    print(and_gate(0, 1))
-    print(and_gate(1, 1))
+    import doctest
+
+    doctest.testmod()

Diff for: boolean_algebra/imply_gate.py

@@ -34,7 +34,6 @@ def imply_gate(input_1: int, input_2: int) -> int:
 
 
 if __name__ == "__main__":
-    print(imply_gate(0, 0))
-    print(imply_gate(0, 1))
-    print(imply_gate(1, 0))
-    print(imply_gate(1, 1))
+    import doctest
+
+    doctest.testmod()

Diff for: boolean_algebra/nand_gate.py

@@ -30,18 +30,7 @@ def nand_gate(input_1: int, input_2: int) -> int:
     return int((input_1, input_2).count(0) != 0)
 
 
-def test_nand_gate() -> None:
-    """
-    Tests the nand_gate function
-    """
-    assert nand_gate(0, 0) == 1
-    assert nand_gate(0, 1) == 1
-    assert nand_gate(1, 0) == 1
-    assert nand_gate(1, 1) == 0
-
-
 if __name__ == "__main__":
-    print(nand_gate(0, 0))
-    print(nand_gate(0, 1))
-    print(nand_gate(1, 0))
-    print(nand_gate(1, 1))
+    import doctest
+
+    doctest.testmod()

Diff for: boolean_algebra/nimply_gate.py

@@ -34,7 +34,6 @@ def nimply_gate(input_1: int, input_2: int) -> int:
 
 
 if __name__ == "__main__":
-    print(nimply_gate(0, 0))
-    print(nimply_gate(0, 1))
-    print(nimply_gate(1, 0))
-    print(nimply_gate(1, 1))
+    import doctest
+
+    doctest.testmod()

Diff for: boolean_algebra/not_gate.py

@@ -24,14 +24,7 @@ def not_gate(input_1: int) -> int:
     return 1 if input_1 == 0 else 0
 
 
-def test_not_gate() -> None:
-    """
-    Tests the not_gate function
-    """
-    assert not_gate(0) == 1
-    assert not_gate(1) == 0
-
-
 if __name__ == "__main__":
-    print(not_gate(0))
-    print(not_gate(1))
+    import doctest
+
+    doctest.testmod()