update

src/CSP-S2023/lock/lock.cpp

@@ -19,12 +19,12 @@ std::ostream &operator<<(std::ostream &os, const std::array<T,S> &s){
     os<<"array [ ";
     if(!s.empty()){
         auto now_it = s.begin();
-        const auto rbegin = s.rbegin();
+        const auto back_1_it = s.end()-1;
-        while(*now_it!=*rbegin){
+        while(now_it!=back_1_it){
             os<<*now_it<<", ";
             ++now_it;
         }
-        os<<*rbegin<<" ]";
+        os<<*back_1_it<<" ]";
     }else{
         os<<"}";
     }
@@ -36,12 +36,13 @@ std::ostream &operator<<(std::ostream &os, const std::set<T> &s){
     os<<"set { ";
     if(!s.empty()){
         auto now_it = s.begin();
-        const auto rbegin = s.rbegin();
+        auto back_1_it = s.end();
-        while(*now_it!=*rbegin){
+        --back_1_it;
+        while(now_it!=back_1_it){
             os<<*now_it<<", ";
             ++now_it;
         }
-        os<<*rbegin<<" }";
+        os<<*back_1_it<<" }";
     }else{
         os<<"}";
     }

src/test.cpp

@@ -1,10 +1,11 @@
-#include <functional>
+#include <iostream>
-#include <queue>
+#include <random>
-
-bool cmp(const int a,const int b){
-    return a>b;
-}
 
 int main(){
-    std::priority_queue<int,std::deque<int>,std::less<int>> q;
+    std::random_device rd;
+    std::mt19937 rng(rd());
+    std::uniform_int_distribution<int> ud(1,10);
+    for(int i{1};i<=10;i++){
+        std::cout<<ud(rng)<<'\n';
+    }
 }