-- Apr 7 In-Class Exercise Thread
for i in range(0,len(S)):
for j in range(i, len(S)):
if S[i][0] >= S[j][0] and S[i][1] <= S[j][1]:
flag S[i] for removal
O(N): N^2
for i in range(0,len(S)):
for j in range(i, len(S)):
if S[i][0] >= S[j][0] and S[i][1] <= S[j][1]:
flag S[i] for removal
O(N): N^2