Calculate the time complexity of each algorithm listed below:

algorithm - 1

int sum()

{

sum=0;

for(int i=0; i<10; i++)

{

sum = sum+1;

}

return sum;

}

algorithm - 2

int sum(int m)

{

sum=0;

for(int i=0; i

{

sum = sum+1;

}

return sum;

}

algorithm - 3

int sum(int m)

{

sum=0;

for(int i=0; i

{

for(int j=0; j<10; j++)

sum = sum+1;

}

return sum;

}

algorithm - 4

int sum(int m)

{

sum=0;

for(int i=0; i

{

for(int j=0; j

sum = sum+1;

}

return sum;

}