**DADS 2nd level index page**
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work-efficient
work-preserving
worst case
worst-case cost
worst-case execution time
worst-case minimum access
xor
Yule distribution: see Zipfian distribution
Zeller's congruence
0-ary function
0-based indexing
0-1 knapsack problem: see knapsack problem
Zhu-Takaoka
Zipfian distribution
Zipf's law
zipper
ZPP