有一个N个元素的有序数列，输入一个数，判断这个数是否在数列中，如果在，输出它在数列的位置。用c语言？

发布网友发布时间：2022-05-07 06:14

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热心网友时间：2023-10-18 18:15

#include <stdio.h>

#include <stdlib.h>

#include <time.h>

#define N 10

#define F 1 //1 显示数列，0不显示

int main( )

{

int i,a[N],num,flag;

srand(time(NULL));

while(1)

{

flag=0;

printf("开始生成%d个2位随机整数数组成的数列\n",N);

for(i=0;i<N;i++)

a[i]=rand()%100;

if(F)

for(i=0;i<N;i++)

printf("%d ",a[i]);

printf("\n请输入一个数：");

scanf("%d",&num);

for(i=0;i<N;i++)

if(a[i]==num)

{

flag=1;

printf("%d在数列第%d个元素的位置\n",num,i+1);

break;

}

if(!flag)

printf("%d不在数列中\n",num);

}

return 1;

}

热心网友时间：2023-10-18 18:15

Dim a() As IntegerPrivate Sub Command1_Click() Cls Randomize (Timer) Dim n As Integer n = InputBox("请输入所生成的数组中包含的元素个数", , 10) ReDim a(n - 1) For i = LBound(a) To UBound(a) a(i) = Int(Rnd * 900 + 100) Next i For i = LBound(a) To UBound(a) - 1 For j = i + 1 To UBound(a) If a(j) < a(i) Then t = a(i) a(i) = a(j) a(j) = t End If Next j Next i For i = LBound(a) To UBound(a) Print a(i); If (i + 1) Mod 10 = 0 Then Print Next i End Sub Private Sub Command2_Click() Dim n As Single, Flag As Boolean n = InputBox("请输入要插入的数n:", , 500) ReDim Preserve a(UBound(a) + 1) Flag = True For i = LBound(a) To UBound(a) If n < a(i) Then For j = UBound(a) To i + 1 Step -1 a(j) = a(j - 1) Next j a(i) = n Flag = False Exit For End If Next i If Flag Then a(UBound(a)) = n Print Print "插入" & n & "：" For i = LBound(a) To UBound(a) Print a(i); If (i + 1) Mod 10 = 0 Then Print Next i PrintEnd Sub Private Sub Form_Load() Me.AutoRedraw = TrueEnd Sub