🚀 DSA Problem Collection

This repository contains 200+ solved problems from LeetCode, CodeChef, CodeForces, GeeksforGeeks, and more. All solutions are implemented in C++ with a clean and optimized approach.

📖 Table of Contents

📌 What's Inside?
📂 Problem Categories

📌 What's Inside?

✅ 200+ Problems from top coding platforms
✅ Efficient C++ Implementations
✅ Categorized by Topics (Arrays, DP, Graphs, etc.)
✅ Detailed Explanations & Complexity Analysis
✅ Well-Structured Code with Comments

📂 Problem Categories

🔹 Arrays & Strings
🔹 Sorting & Searching
🔹 Dynamic Programming
🔹 Graphs & Trees
🔹 Recursion & Backtracking
🔹 Bit Manipulation
...and many more!

Name		Name	Last commit message	Last commit date
Latest commit History 319 Commits
001.hattrick.cpp		001.hattrick.cpp
002.selling_donuts.cpp		002.selling_donuts.cpp
003.two_cards.cpp		003.two_cards.cpp
004.card_swipe.cpp		004.card_swipe.cpp
005.first_and_last.cpp		005.first_and_last.cpp
006.chefanddolls.cpp		006.chefanddolls.cpp
007.palindromic_primes.cpp		007.palindromic_primes.cpp
008.distinct_pair_sum.cpp		008.distinct_pair_sum.cpp
009.Tom_and_Jerry1.cpp		009.Tom_and_Jerry1.cpp
010.playing_with_strings.cpp		010.playing_with_strings.cpp
011.Chef_and_digits_of_a_number.cpp		011.Chef_and_digits_of_a_number.cpp
012.program_yout_own_calculator.cpp		012.program_yout_own_calculator.cpp
013.Making_a_Meal.cpp		013.Making_a_Meal.cpp
015.Adjacent_Sum_Array.cpp		015.Adjacent_Sum_Array.cpp
016.Assignment_Score.cpp		016.Assignment_Score.cpp
017.Calorie_Intake.cpp		017.Calorie_Intake.cpp
018.Chef_and_his_Students.cpp		018.Chef_and_his_Students.cpp
019.permutation_mod_k.cpp		019.permutation_mod_k.cpp
020.Lucky_numbers_in_matrix		020.Lucky_numbers_in_matrix
021.Watering_Plants.cpp		021.Watering_Plants.cpp
022.Separate_the_digits_in_array.cpp		022.Separate_the_digits_in_array.cpp
023.Array_Partition.cpp		023.Array_Partition.cpp
024.Power_of_two.cpp		024.Power_of_two.cpp
025.Power_of_three.cpp		025.Power_of_three.cpp
026.Power_of_four.cpp		026.Power_of_four.cpp
027.Find_the_kth_character_in_string_game_1.cpp		027.Find_the_kth_character_in_string_game_1.cpp
028.Minimum_types.cpp		028.Minimum_types.cpp
029.Nice_array.cpp		029.Nice_array.cpp
030.Magical_world.cpp		030.Magical_world.cpp
031.uninterestingnumber.cpp		031.uninterestingnumber.cpp
032.Take_Gifts_From_the_Richest_Pile.cpp		032.Take_Gifts_From_the_Richest_Pile.cpp
033.Great_run.cpp		033.Great_run.cpp
034.Airport_Management.cpp		034.Airport_Management.cpp
035.Broken_Telephone.cpp		035.Broken_Telephone.cpp
036.Coronavirus_spread.cpp		036.Coronavirus_spread.cpp
037.Parity.cpp		037.Parity.cpp
038.Total_prize_money.cpp		038.Total_prize_money.cpp
039.Counting_words.cpp		039.Counting_words.cpp
040.Keyboard_Row.cpp		040.Keyboard_Row.cpp
041.Minimum_Index_Sum_of_Two_Lists.cpp		041.Minimum_Index_Sum_of_Two_Lists.cpp
042.Most_common_word.cpp		042.Most_common_word.cpp
043.Number_of_Lines_To_Write_String.cpp		043.Number_of_Lines_To_Write_String.cpp
044.Bulk_discount.cpp		044.Bulk_discount.cpp
045.post_perimeter.cpp		045.post_perimeter.cpp
046.Shortest_Distance_to_a_Character.cpp		046.Shortest_Distance_to_a_Character.cpp
047.Distinct_number.cpp		047.Distinct_number.cpp
048.increasing_array.cpp		048.increasing_array.cpp
100.Maximum_Submissions.cpp		100.Maximum_Submissions.cpp
101.TV_Discount.cpp		101.TV_Discount.cpp
102.Broken_Phone.cpp		102.Broken_Phone.cpp
103.Tyre_problem.cpp		103.Tyre_problem.cpp
104.Sum_of_Digits.cpp		104.Sum_of_Digits.cpp
105.Monthly_Budget.cpp		105.Monthly_Budget.cpp
106.Credit_score.cpp		106.Credit_score.cpp
107.First_and_Last_Digit.cpp		107.First_and_Last_Digit.cpp
108.Practice_makes_us_perfect.cpp		108.Practice_makes_us_perfect.cpp
109.Access_code_equality.cpp		109.Access_code_equality.cpp
110.Minimum_bottles.cpp		110.Minimum_bottles.cpp
111.Monster_Monster.cpp		111.Monster_Monster.cpp
112.Opposite_attract.cpp		112.Opposite_attract.cpp
113.Pending_Assignments.cpp		113.Pending_Assignments.cpp
114.Can_you_bench.cpp		114.Can_you_bench.cpp
115.Big_Achiever.cpp		115.Big_Achiever.cpp
116.sort_0s_1s_2s.cpp		116.sort_0s_1s_2s.cpp
117.Insurance.cpp		117.Insurance.cpp
118.Codechef_airlines.cpp		118.Codechef_airlines.cpp
119.Battery_Low.cpp		119.Battery_Low.cpp
120.Make_odd.cpp		120.Make_odd.cpp
121.Unique_email_address.cpp		121.Unique_email_address.cpp
122.Count_Pairs_whose_sum_is_less_than_target.cpp		122.Count_Pairs_whose_sum_is_less_than_target.cpp
123.Bob_at_the_bank.cpp		123.Bob_at_the_bank.cpp
124.Slows_solution.cpp		124.Slows_solution.cpp
125.Adjacent_Sum_Parity.cpp		125.Adjacent_Sum_Parity.cpp
126.1684_Count_the-Number_of_Consistent_Strings.cpp		126.1684_Count_the-Number_of_Consistent_Strings.cpp
127.1629_Slowest_key.cpp		127.1629_Slowest_key.cpp
128.2114_Maximum_Number_of_Words_Found_in_Sentences.cpp		128.2114_Maximum_Number_of_Words_Found_in_Sentences.cpp
129.1816_Truncate_Sentence.cpp		129.1816_Truncate_Sentence.cpp
130.2185_Counting_Words_With_a_Given_Prefix.cpp		130.2185_Counting_Words_With_a_Given_Prefix.cpp
131.2125_Number_of_Laser_Beams_in_a_Bank.cpp		131.2125_Number_of_Laser_Beams_in_a_Bank.cpp
132.2391_Minimum_Amount_of_Time_to_Collect_Garbage.cpp		132.2391_Minimum_Amount_of_Time_to_Collect_Garbage.cpp
133.First_second_smallest.cpp		133.First_second_smallest.cpp
134.Advitiya.cpp		134.Advitiya.cpp
135.Indexes_of_subarray_sum.cpp		135.Indexes_of_subarray_sum.cpp
136.Product_array_puzzle.com		136.Product_array_puzzle.com
137.Max_sum_subarray_of_size_k.cpp		137.Max_sum_subarray_of_size_k.cpp
138.Swish_game.cpp		138.Swish_game.cpp
139.Equilibrium_using_prefix_sum.cpp		139.Equilibrium_using_prefix_sum.cpp
14.Granama_recipes.cpp		14.Granama_recipes.cpp
140.2544_Alternating_Digit_Sum.cpp		140.2544_Alternating_Digit_Sum.cpp
141.Count_digits.cpp		141.Count_digits.cpp
142.Reverse_Integer.cpp		142.Reverse_Integer.cpp
143.White_Wall.cpp		143.White_Wall.cpp
144.Majority_element.cpp		144.Majority_element.cpp
145.3442_Maximum_Difference_Between_Even_and_Odd_Frequency_I.cpp		145.3442_Maximum_Difference_Between_Even_and_Odd_Frequency_I.cpp
146.3105_Longest_Strictly_Increasing_or_Strictly_Decreasing_Subarray.cpp		146.3105_Longest_Strictly_Increasing_or_Strictly_Decreasing_Subarray.cpp
147.1752_Check_if_Array_Is_Sorted_and_Rotated.cpp		147.1752_Check_if_Array_Is_Sorted_and_Rotated.cpp
148.3151_Special_Array_I.cpp		148.3151_Special_Array_I.cpp
149.1689_Partitioning_Into_Minimum_Number_Of_Deci-Binary_Numbers.cpp		149.1689_Partitioning_Into_Minimum_Number_Of_Deci-Binary_Numbers.cpp
150.most_Frequent_character.cpp		150.most_Frequent_character.cpp
151.75_Sort_colors.cpp		151.75_Sort_colors.cpp

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