70.下列VB程序段功能為:通過(guò)雙向冒泡排序,最終使數(shù)組元素a(1)到a(n)實(shí)現(xiàn)升序排列。
上述程序段中橫線處可選語(yǔ)句為:
①(1)n-i to i step-1(2)i+2 to n-i+1
②(1)n-i to i+1 step-1(2)i to n-i
③(1)i+1 to n-i(2)n-1 to i+1 step-1
④(1)i to n-i(2)n-i to i+1 step-1
則(1)(2)處填入的語(yǔ)句組合正確的有( ?。?/div>
發(fā)布:2024/5/23 20:38:36組卷:11引用:2難度:0.3