Q40 Minimum ASCII Delete Sum for Two Strings - LeetCode 712

PHOTO

Tue Mar 28 2023 11:07:11 GMT+0000 (Coordinated Universal Time)

Saved by @Ayush_dabas07

class Solution {
    public int minimumDeleteSum(String s1, String s2) {
        //Ques 40 of dp playlist ,minimum ASCCII SUM (MAS)

        //every cell will store MAS for ith string to be equal to jth string

        int m = s1.length() , n = s2.length();
        int[][] dp = new int[m+1][n+1];     //+1 for empty string

        //last row and last col will be 0
        
        for(int i = m; i>=0 ;i--){

            for(int j = n ; j>=0 ; j--){
                
                //last cell
                if(i == m && j == n)
                dp[i][j] = 0;
                
                //last col, it will be down cell + ASCII of current character
                else if(j == n)
                dp[i][j] = dp[i+1][j] + (int)s1.charAt(i);

                //last row, it will be right cell + ASCII of current character
                else if(i == m)
                dp[i][j] = dp[i][j+1] + (int)s2.charAt(j);

                //ROD - rest of the dp
                else{
                    if(s1.charAt(i) == s2.charAt(j))
                    dp[i][j] = dp[i+1][j+1];
                    
                    /*removing first char of str1 and checking MAS with ros str2
                    and vice versa ...and taking minimum of both while adding
                    the ascii value of character removed
                    */
                    else{
                        int MAS1 = dp[i+1][j] + (int)(s1.charAt(i));
                        int MAS2 = dp[i][j+1] + (int)(s2.charAt(j));
                        dp[i][j] = Math.min(MAS1 , MAS2);
                    }
                }
            }
        }

        return dp[0][0];
    }
}

https://leetcode.com/problems/minimum-ascii-delete-sum-for-two-strings/

Save snippets that work from anywhere online with our extensions

Available in the Chrome Web Store

Get Firefox Add-on

Get VS Code extension

Comments

More like this

DP level 2

@Ayush_dabas07

Q66 Distinct Echo Substrings - LeetCode 1316 (rabin karp rolling hash -> O(n^2)) Q66 Distinct Echo Substrings - LeetCode 1316(O(n^3) solution) Q65 Interleaving String - LeetCode 97 Q64 Frog Jump - LeetCode 403 Q63 Champagne Tower - LeetCode 799 Q62 Super Ugly Number - LeetCode 313 Q61 Ugly Number 2 - LeetCode 264 Q60 Minimum Insertion Steps to Make a String Palindrome - LeetCode 1316 Q59 Temple Offerings | Practice | GeeksforGeeks Q58 Word Break - LeetCode 139 Q57 Arithmetic Slices II - Subsequence - LeetCode 446 Q56 Arithmetic Slices - LeetCode 413 Q55 Max sum of M non-overlapping subarrays of size K - GeeksforGeeks (tabulization) Q55 Max sum of M non-overlapping subarrays of size K - GeeksforGeeks (memoization) Q54 Maximum Sum of 3 Non-Overlapping Subarrays - LeetCode 689 Q53 Maximum Sum of Two Non-Overlapping Subarrays - LeetCode 1031 Q52 Maximum difference of zeros and ones in binary string | Practice | GeeksforGeeks Q51 Mobile numeric keypad | Practice | GeeksforGeeks Q50 Distinct Transformation LeetCode Playground ( tabulization approach) Q50 - Distinct Transformation- LeetCode Playground ( recursion + memoization approach) Q49 Highway BillBoards - Coding Ninjas Codestudio approach 2 Q49 Highway BillBoards - Coding Ninjas Codestudio (approach 1 LIS) Q48 Knight Probability in Chessboard - LeetCode 688 Q47 Cherry Pickup - LeetCode 741 (recursion approach) Q46 Super Egg Drop - LeetCode 887 Q45 Predict the Winner - LeetCode 486 Q45 Optimal Strategy For A Game | Practice | GeeksforGeeks | leetcode 46 Q44 Largest Sum Subarray of Size at least K | Practice | GeeksforGeeks Q42 Maximum Subarray - LeetCode 53 Q41 Minimum Cost To Make Two Strings Identical | Practice | GeeksforGeeks Q40 Minimum ASCII Delete Sum for Two Strings - LeetCode 712 Q39 Scramble String - LeetCode 87 Q38 Edit Distance - LeetCode 72 Q37 Regular Expression Matching - LeetCode 10 Q36 Wildcard Matching - LeetCode Q35 Longest Repeating Subsequence | Practice | GeeksforGeeks Q34 Longest Common Substring | Practice | GeeksforGeeks Q33 Count Different Palindromic Subsequences - LeetCode 730 Q32 Number of distinct subsequences | Practice | GeeksforGeeks Q31 Longest Palindromic Substring - LeetCode Q30 Count Palindromic Subsequences | Practice | GeeksforGeeks Q29 Longest Palindromic Subsequence - LeetCode 516 Q28 Longest Common Subsequence - LeetCode 1143 Q27 Minimum Score Triangulation of Polygon - LeetCode 1039 Q26 Optimal binary search tree | Practice | GeeksforGeeks Q24 Matrix Chain Multiplication | Practice | GeeksforGeeks Q23 Palindrome Partitioning II - LeetCode 132 Q23 Palindrome Partitioning II - LeetCode - 132 ( n^3 approach) Q22 Palindromic Substrings - LeetCode 647 Q21 Rod Cutting | Practice | GeeksforGeeks Q20 Minimum Score Triangulation of Polygon - LeetCode 1039 Q19 Intersecting Chords in a Circle | Interviewbit Q18 Generate Parentheses - LeetCode 22 Q17 PepCoding | Count Of Valleys And Mountains Q16 Unique Binary Search Trees - LeetCode 96 Q15 Catalan Number Minimum Score of a Path Between Two Cities - 2492 Q14 Perfect Squares - LeetCode Q13 Russian Doll Envelopes - LeetCode (LIS in NlogN - accepted solution) Q13 Russian Doll Envelopes - LeetCode 354 solution1(LIS in O(n^2)) Q12 PepCoding | Maximum Non-overlapping Bridges Q11 Longest Bitonic subsequence | Practice | GeeksforGeeks Q10 Maximum sum increasing subsequence | Practice | GeeksforGeeks Q9 PepCoding | Print All Longest Increasing Subsequences Q8 Longest Increasing Subsequence - LeetCode 300 Q7 2 Keys Keyboard - LeetCode 650 Q-6 PepCoding | Print All Results In 0-1 Knapsack Q5 PepCoding | Print All Paths With Target Sum Subset Q4 PepCoding | Print All Paths With Maximum Gold Q3 PepCoding | Print All Paths With Minimum Cost Q2 Jump Game II - LeetCode 45 Q1 Maximal Square - LeetCode 221 Q67 Longest Increasing Subsequence - LeetCode 300 ( LIS O(nlogn) solution) Q43 K-Concatenation Maximum Sum - LeetCode 1191 Q13 Russian Doll Envelopes - LeetCode 354 ( LIS -> O(nlogn) solution) Q25 Burst Balloons - LeetCode 312

Browse more snippets >>