Quiz question doubt

#1

Why is it n^2 ?

#2

hello @bishal_c

please share the quiz question with me

#3

Predict the time complexity of the following recursive function, given the vector is of size N and the initial call is calSum(v, 0). int sum = 0; void calcSum(vector v, int i) { if(i == v.size()) return; sum += v[i]; calcSum(v, i+1); }

#4

already replied in ur chat box,pls check