CSES: add sum of three values

Author: Pankajcoder1

CSES/Sorting_and_Searching/Sum of Three Values.cpp

@@ -0,0 +1,48 @@
+/*
+    written by Pankaj Kumar.
+    country:-INDIA
+*/
+#include <bits/stdc++.h>
+using namespace std;
+typedef long long ll;
+
+
+int solve(){
+    int n,x,temp;
+    cin>>n>>x;
+    vector<pair<int,int>> v(n);
+    for(int i=0;i<n;i++){
+        cin>>temp;
+        // storing 0 based index
+        v[i]={temp,i};
+    }
+    sort(v.begin(),v.end());
+    for(int i=0;i<n-2;i++){
+        int req_sum=x-v[i].first;
+        int start = i+1, end = n - 1;
+        while (end > start)
+        {
+            temp = v[start].first + v[end].first;
+            if (temp == req_sum)
+            {
+                cout << v[i].second+1 <<" " << v[start].second + 1 << " " << v[end].second + 1 << endl;
+                return 0;
+            }
+            if (temp < req_sum)
+                start++;
+            else
+                end--;
+        }
+    }
+    cout << "IMPOSSIBLE" << endl;
+    return 0;
+}
+int main()
+{
+    int testCase=1;
+    // cin>>testCase;
+    while(testCase--){
+        solve();
+    }
+    return 0;
+}

LeetCode/1750. Minimum Length of String After Deleting Similar Ends.cpp

@@ -0,0 +1,36 @@
+/*
+    written by Pankaj Kumar.
+    country:-INDIA
+*/
+typedef long long ll;
+const ll INF = 1e18;
+const ll mod1 = 1e9 + 7;
+const ll mod2 = 998244353;
+// Add main code here
+
+class Solution
+{
+public:
+    int minimumLength(string str)
+    {
+        int s = 0, e = str.size() - 1;
+        while (s < e)
+        {
+            if (str[s] == str[e])
+            {
+                while (str[s] == str[s + 1] && s < e)
+                    s++;
+                while (str[e] == str[e - 1] && s < e)
+                    e--;
+                s++;
+                e--;
+            }
+            else
+                break;
+        }
+        int ans = e - s + 1;
+        if (ans < 0)
+            return 0;
+        return ans;
+    }
+};