Question
Complete the pseudocode of the singleRotation method, corresponding to the proper single-rotation restructure operation in an AVL-tree, and started for you in the partial pseudocode
Complete the pseudocode of the singleRotation method, corresponding to the proper single-rotation restructure operation in an AVL-tree, and started for you in the partial pseudocode given in Algorithm 5, by matching the five missing statements (in line indexes 2, 4, 6, 8, and 11), listed on the left-hand side below, with the corresponding operation, listed on the right-hand side below. (For your convenience, the pseudocode for the auxiliary method makeChild is given in Algorithm 6. Assume that the auxiliary method resetHeight, which takes as input a node w in the AVL tree and resets its height with respect to the subtree rooted at w, if needed, has been properly implemented.)
5. (10 pts.] Complete the pseudocode of the SINGLEROTATION method, corresponding to the proper single-rotation restructure operation in an AVL-tree, and started for you in the par- tial pseudocode given in Algorithm 5, by matching the five missing statements in line in- dexes 2, 4, 6, 8, and 11), listed on the left-hand side below, with the corresponding oper- ation, listed on the right-hand side below. (For your convenience, the pseudocode for the auxiliary method MAKECHILD is given in Algorithm 6. Assume that the auxiliary method RESET HEIGHT, which takes as input a node w in the AVL tree and resets its height with respect to the subtree rooted at w, if needed, has been properly implemented.) Algorithm 5 SINGLE ROTATION(y, 2) 1: rotate Left? + y = z.right 3: if rotate Left? then 5: else Algorithm 6 MAKECHILD(p, c, left?) 1: if left? then 2: p.left + c 3: else 4: p.right + c 5: if c# NULL then 6: c.parent p 7: MAKECHILD(y, z, rotate Left?) 9: MAKECHILD(w, y, w.left = 2) 10: RESETHEIGHT(2) 11: 12: RESETHEIGHT(w) 13: return y Statement # Operation Statement 2 MAKECHILD(z,Ty, not rotate Left?) Statement 4 Ty + y.left Statement 6 reset Height(y) Statement 8 w + z.parent Statement 11 Tyy.right 5. (10 pts.] Complete the pseudocode of the SINGLEROTATION method, corresponding to the proper single-rotation restructure operation in an AVL-tree, and started for you in the par- tial pseudocode given in Algorithm 5, by matching the five missing statements in line in- dexes 2, 4, 6, 8, and 11), listed on the left-hand side below, with the corresponding oper- ation, listed on the right-hand side below. (For your convenience, the pseudocode for the auxiliary method MAKECHILD is given in Algorithm 6. Assume that the auxiliary method RESET HEIGHT, which takes as input a node w in the AVL tree and resets its height with respect to the subtree rooted at w, if needed, has been properly implemented.) Algorithm 5 SINGLE ROTATION(y, 2) 1: rotate Left? + y = z.right 3: if rotate Left? then 5: else Algorithm 6 MAKECHILD(p, c, left?) 1: if left? then 2: p.left + c 3: else 4: p.right + c 5: if c# NULL then 6: c.parent p 7: MAKECHILD(y, z, rotate Left?) 9: MAKECHILD(w, y, w.left = 2) 10: RESETHEIGHT(2) 11: 12: RESETHEIGHT(w) 13: return y Statement # Operation Statement 2 MAKECHILD(z,Ty, not rotate Left?) Statement 4 Ty + y.left Statement 6 reset Height(y) Statement 8 w + z.parent Statement 11 Tyy.rightStep by Step Solution
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