5주차 문제 풀이

bruteforce/p소수 만들.cpp

@@ -0,0 +1,31 @@
+#include <vector>
+#include <iostream>
+using namespace std;
+
+int abc(int num) {
+    int count = 0;
+    for (int i = 2; i <= num; i++) {
+        if (num % i == 0) {
+            count++;
+        }
+    }
+    return count;
+}
+
+int solution(vector<int> nums) {
+    int answer = 0;
+    int num = 0;
+    for (int i = 0; i < nums.size(); i++) {
+        for (int j = i + 1; j < nums.size(); j++) {
+            for (int k = j + 1; k < nums.size(); k++) {
+                num = nums[i] + nums[j] + nums[k];
+                int count = abc(num);
+                if (count == 1) {
+                    answer++;
+                }
+            }
+        }
+    }
+
+    return answer;
+}

string/p숫자 문자열과 영단어.cpp

@@ -0,0 +1,70 @@
+#include <string>
+#include <vector>
+#include <iostream>
+using namespace std;
+
+int solution(string s) {
+    int answer = 0;
+    string v;
+    for (int i = 0; i < s.size(); i++) {
+        if (s[i] == 'z') {
+            i = i + 3;
+            v = v + "0";
+        }
+        else if (s[i] == 'o') {
+            i = i + 2;
+            v = v + "1";
+        }
+        else if (s[i] == 't') {
+            if (s[i + 1] == 'w') {
+                i = i + 2;
+                v = v + "2";
+            }
+            else if (s[i + 1] == 'h') {
+                i = i + 4;
+                v = v + "3";
+            }
+        }
+        else if (s[i] == 'f') {
+            if (s[i + 1] == 'o') {
+                i = i + 3;
+                v = v + "4";
+            }
+            else if (s[i + 1] == 'i') {
+                i = i + 3;
+                v = v + "5";
+            }
+        }
+        else if (s[i] == 's') {
+            if (s[i + 1] == 'i') {
+                i = i + 2;
+                v = v + "6";
+            }
+            else if (s[i + 1] == 'e') {
+                i = i + 4;
+                v = v + "7";
+            }
+        }
+        else if (s[i] == 'e') {
+            i = i + 4;
+            v = v + "8";
+        }
+        else if (s[i] == 'n') {
+            i = i + 3;
+            v = v + "9";
+        }
+        else {
+            v = v + s[i];
+        }
+    }
+    answer = stoi(v);
+    cout << answer;
+    return answer;
+}
+
+int main() {
+    string s;
+    cin >> s;
+    solution(s);
+    return 0;
+}