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Partition_Equal_Subset_Sum.cpp
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Partition_Equal_Subset_Sum.cpp
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class Solution {
public:
bool checkSubset(vector<int>&nums, int n , int part)
{
bool t[n+1][part+1];
for(int i =0; i<=n ; i++)
{
for(int j=0; j<=part; j++)
{
if(i==0)
{
t[i][j]=false;
}
if(j==0)
{
t[i][j]=true;
}
}
}
for(int i =1; i<=n ; i++)
{
for(int j=1; j<=part; j++)
{
if(nums[i-1]<=j)
{
t[i][j] = t[i-1][j-nums[i-1]] || t[i-1][j] ;
}
else
{
t[i][j] = t[i-1][j];
}
}
}
return t[n][part];
}
bool canPartition(vector<int>& nums) {
int n = nums.size();
int sum =0;
for(int i =0; i<n; i++)
{
sum+=nums[i];
}
if(sum%2==0)
{
return checkSubset(nums,n,sum/2);
}
else
{
return false;
}
}
};