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Find a big-O estimate for the running time (in terms of n) of the following function (with explanation): (a) int mysterySum( int n ) {
Find a big-O estimate for the running time (in terms of n) of the following function (with explanation):
(a) int mysterySum( int n ) {
int i, j, s=0;
for(i=0; i < n; i++) {
for(j=0; j < i; j++) {
s += i*i;
}
}
}
(b) Replace the inner loop in mysterySum by an O(1) expression and compute the running time of the new program.
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