57 若宣告X、Y與Z皆為變數,且X≠Y。下列演算法中,何者可將X與Y的值互換?
(A) X = Y:Y = X
(B) Z = X:Y = X:X = Z
(C) Z = X:X = Y:Y = Z
(D) Y = X:X = Z:Z = Y

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統計: A(19), B(30), C(126), D(19), E(0) #1522493