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Mar 14, 2024
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Create 930. Binary Subarrays With Sum #428

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31 changes: 31 additions & 0 deletions 930. Binary Subarrays With Sum
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Original file line number Diff line number Diff line change
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class Solution {

public:

int numSubarraysWithSum(vector<int>& nums, int goal) {

unordered_map<int,int> mpp;

int sum = 0;
int cnt = 0;

for(auto i:nums)
{
sum+=i;
if(sum==goal) cnt++;
if(mpp.find(sum-goal)!=mpp.end())

{

cnt+=mpp[sum-goal];

}
mpp[sum]++;

}

return cnt;

}

};
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