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Check if a binary string contains consecutive same or not in C++
Suppose we have a binary string. Our task is to check whether the string has consecutive same characters or not. If there are consecutive same characters, then that is invalid, otherwise valid. Then the string “101010” is valid, but “10111010” is invalid.
To solve this problem, we will traverse from left to right, if two consecutive characters are the same, then return false, otherwise true.
Example
#include <iostream>
#include <algorithm>
using namespace std;
bool isConsecutiveSame(string str){
int len = str.length();
for(int i = 0; i<len - 1; i++){
if(str[i] == str[i + 1])
return false;
}
return true;
}
int main() {
string str = "101010";
if(isConsecutiveSame(str))
cout << "No consecutive same characters";
else
cout << "Consecutive same characters found";
}Output
No consecutive same characters
Updated on: 21-Oct-2019
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