如果显示在七段显示
中，检查一个数字的镜像是否相同
原文:https://www . geesforgeks . org/check-if-mirror-image-of-number-is-if-display-in-segment-display/
给定一个正数 n 。任务是检查在七线段上显示的数字镜像是否等于给定的数字。一个数的镜像是该数的反射复制，看起来几乎相同，但在垂直于镜面的方向上是相反的。 举例:
Input : n = 101
Output: Yes
Mirror image of 101 is 101 on seven line segment. So, print "Yes".
Input : n = 020
Output : No
观察显示在七个线段上的每个数字，只有数字 0、1、8 在其镜像中保持不变。所以，一个数字要等于它的镜像，它应该只包含 0，1，8 位数字。另外，注意，为了使两个数字相等，它们对应的位置数字应该相同。因此，镜像也应该在其对应的数字位置包含相同的数字。所以，数字也应该是回文。 以下是该方法的实施:
C++
// C++ Program to check if mirror image of a number is
// same if displayed in seven segment display
#include <bits/stdc++.h>
using namespace std;
// Return "Yes", if the mirror image of number
// is same as the given number
// Else return "No"
string checkEqual(string S)
{
// Checking if the number contain only 0, 1, 8.
for (int i = 0; i < S.size(); i++) {
if (S[i] != '1' && S[i] != '0' && S[i] != '8') {
return "No";
}
}
int start = 0, end = S.size() - 1;
// Checking if the number is palindrome or not.
while (start < end) {
// If corresponding index is not equal.
if (S[start] != S[end]) {
return "No";
}
start++;
end--;
}
return "Yes";
}
int main()
{
string S = "101";
cout << checkEqual(S) << endl;
return 0;
}
Java 语言(一种计算机语言，尤用于创建网站)
// Java Program to check if
// mirror image of a number
// is same if displayed in
// seven segment display
import java.io.*;
class GFG
{
// Return "Yes", if the
// mirror image of number
// is same as the given
// number Else return "No"
static String checkEqual(String S)
{
// Checking if the number
// contain only 0, 1, 8.
for (int i = 0;
i < S.length(); i++)
{
if (S.charAt(i) != '1' &&
S.charAt(i) != '0' &&
S.charAt(i) != '8')
{
return "No";
}
}
int start = 0,
end = S.length() - 1;
// Checking if the number
// is palindrome or not.
while (start < end)
{
// If corresponding
// index is not equal.
if (S.charAt(start) !=
S.charAt(end))
{
return "No";
}
start++;
end--;
}
return "Yes";
}
// Driver Code
public static void main (String[] args)
{
String S = "101";
System.out.println(checkEqual(S));
}
}
// This code is contributed
// by anuj_67.
Python 3
# Python3 Program to check if mirror
# image of a number is same if displayed
# in seven segment display
# Return "Yes", if the mirror image
# of number is same as the given number
# Else return "No"
def checkEqual(S):
# Checking if the number contain
# only 0, 1, 8.
for i in range(len(S)):
if (S[i] != '1' and S[i] != '0'
and S[i] != '8'):
return "No";
start = 0;
end = len(S) - 1;
# Checking if the number is
# palindrome or not.
while (start < end):
# If corresponding index is not equal.
if (S[start] != S[end]):
return "No";
start += 1;
end -= 1;
return "Yes";
# Driver Code
S = "101";
print(checkEqual(S));
# This code is contributed by mits
C
// C# Program to check if mirror image
// of a number is same if displayed in
// seven segment display
using System;
class GFG
{
// Return "Yes", if the mirror image
// of number is same as the given
// number Else return "No"
static string checkEqual(string S)
{
// Checking if the number
// contain only 0, 1, 8.
for (int i = 0; i < S.Length; i++)
{
if (S[i] != '1' &&
S[i] != '0' &&
S[i] != '8')
{
return "No";
}
}
int start = 0, end = S.Length - 1;
// Checking if the number is
// palindrome or not.
while (start < end)
{
// If corresponding index is not equal.
if (S[start] !=
S[end])
{
return "No";
}
start++;
end--;
}
return "Yes";
}
// Driver Code
public static void Main()
{
string S = "101";
Console.WriteLine(checkEqual(S));
}
}
// This code is contributed
// by mits
服务器端编程语言（Professional Hypertext Preprocessor 的缩写）
<?php
// PHP Program to check if mirror image
// of a number is same if displayed in
// seven segment display
// Return "Yes", if the mirror image
// of number is same as the given number
// Else return "No"
function checkEqual($S)
{
// Checking if the number contain
// only 0, 1, 8.
for ($i = 0; $i < strlen($S); $i++)
{
if ($S[$i] != '1' && $S[$i] != '0' &&
$S[$i] != '8')
{
return "No";
}
}
$start = 0;
$end = strlen($S) - 1;
// Checking if the number is
// palindrome or not.
while ($start < $end)
{
// If corresponding index is not equal.
if ($S[$start] != $S[$end])
{
return "No";
}
$start++;
$end--;
}
return "Yes";
}
// Driver Code
$S = "101";
echo checkEqual($S);
// This code is contributed by ajit
?>
java 描述语言
<script>
// Javascript Program to check if mirror image of a number is
// same if displayed in seven segment display
// Return "Yes", if the mirror image of number
// is same as the given number
// Else return "No"
function checkEqual(S)
{
// Checking if the number contain only 0, 1, 8.
for (var i = 0; i < S.length; i++) {
if (S[i] != '1' && S[i] != '0' && S[i] != '8') {
return "No";
}
}
var start = 0, end = S.length - 1;
// Checking if the number is palindrome or not.
while (start < end) {
// If corresponding index is not equal.
if (S[start] != S[end]) {
return "No";
}
start++;
end--;
}
return "Yes";
}
var S = "101";
document.write( checkEqual(S));
</script>
输出T2】
Yes
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