find all occurrences of a substring in a string c++
#include <string>
#include <iostream>
using namespace std;
int main()
{
string s("hello hello");
int count = 0;
size_t nPos = s.find("hello", 0); // first occurrence
while(nPos != string::npos)
{
count++;
nPos = s.find("hello", nPos + 1);
}
cout << count;
};python find all elements of substring in string
def find_all(a_str, sub):
start = 0
while True:
start = a_str.find(sub, start)
if start == -1: return
yield start
start += len(sub) # use start += 1 to find overlapping matches
list(find_all('spam spam spam spam', 'spam')) # [0, 5, 10, 15]find number of occurrences of a substring in a string java
public static int count(String str, String target) {
return (str.length() - str.replace(target, "").length()) / target.length();
}Copyright © 2021 Codeinu
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