Q46 Super Egg Drop - LeetCode 887

PHOTO

Thu Mar 30 2023 12:38:58 GMT+0000 (Coordinated Universal Time)

Saved by @Ayush_dabas07

class Solution {
    public int superEggDrop(int eggs, int floors) {
        //dp ques 46 of playlist


        //if floors == 1 return 1 , if 0 return 0 ;
        if(floors == 0) return 0 ;
        if(floors == 1) return 1;  
        if(eggs == 0)  return -1;
        if(eggs == 1) return floors;    //minimum attempts will be total floors

        //let eggs be on rows and floors be on cols

        //+1 for 0 eggs and 0 floors
        int dp[][] = new int[eggs+1][floors+1]; 

        //1st row ->invalid , 2nd row -> no.of floors will be answer ,1st col->0
        for(int i = 1 ; i < eggs+1 ;i++){
            for(int j = 1 ; j < floors+1 ; j++){

                if(i == 1)
                dp[i][j] = j;

                else{
                    // taking max of all options and then taking min of those
    
                    int min = Integer.MAX_VALUE;
                    for(int b = j-1 , a = 0 ; b>=0 ; a++ , b--){
                        int breaks = dp[i][b];  //egg breaks
                        int safe = dp[i-1][a];   //egg doesn't breaks

                        int val = Math.max(safe , breaks);
                        min = Math.min(val , min);
                    }
                    dp[i][j] = min+1;
                }
            }
        }
        
        return dp[eggs][floors];
    }
}

https://leetcode.com/problems/super-egg-drop/

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DP level 2

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