2996. Smallest Missing Integer Greater Than Sequential Prefix Sum

ASHUTOSH SHARMA answered on March 23, 2024 Popularity 1/10 Helpfulness 1/10

answer 2996. Smallest Missing Integer Greater Than Sequential Prefix Sum

2996. Smallest Missing Integer Greater Than Sequential Prefix Sum

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class Solution {
public:
    int missingInteger(vector<int>& nums) {

        unordered_map<int,int>m;
        int sum=nums[0];
        int n=nums.size();
        for(int i=1;i<n;i++){

            if(nums[i]<=nums[i-1]){
                    break;
                }
            if(nums[i]==nums[i-1]+1){
                sum+=nums[i];
            }

            else
            break;
        }

        // for (int i = 1; i < n && nums[i] == nums[i - 1] + 1; i++) {
        //     sum += nums[i];
        //     }


        for(int i=0;i<n;i++){
                m[nums[i]]=i;
        }

        for(int i=0;i<n;i++){

            if(m.find(sum)==m.end()){
                return sum;
            }

            else if(m.find(sum)!=m.end()){
                while(m.find(sum)!=m.end()){
                    sum++;
                }
                return sum;
            }
             
        }
return  -1;
    }
};

Popularity 1/10 Helpfulness 1/10 Language cpp

Source: leetcode.com

Tags: c++ integer prefix-sum sequential

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Contributed on Mar 23 2024

ASHUTOSH SHARMA

0 Answers Avg Quality 2/10

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