Help in stl

1

why did binary_search() false when u looking for 0
in vector stl

1 Like
2

please include the code you are considering

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3

vector v={10,20,30,0};

if(binary_search(v.begin(),v.end(),0))
cout<<“true”;

else
cout<<“false”;
out put is false

4

why i am getting false

5

the binary_search function requires that the vector is sorted

You can use “find” if that’s not the case

1 Like
6

thk

7

binary_search works on a sorted container