java - What is the big o estimate of this nested for loop? -


this question has answer here:

i trying figure out big o estimate of following nested loop is.

for(int = 10; 100; i++){  for(int j = 1; j i; j++){   for(int k = 1; k j; k++){    s=s+i+j;   }  } }

i thinking 2 inner loops run n times unsure first loop.

what big o estimate code?

technically complexity o(1) because 100 constant , number of operations same. if author assumed 100 parameter , can variable, i.e.

int n = 100; //or read somewhere (int = 10; < n; ++i) {     ....  }

then complexity o(n^3). first cycle body executed n - 10 times o(n), second cycle's body executed n - 10 times once, again o(n), , same can stated innermost cycle, giving o(n^3).

article useful understanding big o notation: big o notation


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