So, this is a familiar summation, this summation of i is equal to 1 to n minus 1 of i and this you should know is n minus 1 into n, this is a very familiar recurrence and this what we have already seen actually, this is O n square.
i യുടെ ഈ സംഗ്രഹം i യുടെ 1 മുതൽ n-1 വരെ തുല്യമാണ്, ഇത് x n)