diff --git a/07- July/README.md b/07- July/README.md
index 0742da289..d35f4d77f 100644
--- a/07- July/README.md
+++ b/07- July/README.md
@@ -24,6 +24,7 @@
1. **[Fair Distribution of Cookies](#01--fair-distribution-of-cookies)**
1. **[Maximum Number of Achievable Transfer Requests](#02--maximum-number-of-achievable-transfer-requests)**
1. **[Buddy Strings](#03--buddy-strings)**
+1. **[Single Number II](#04--single-number-ii)**
@@ -211,4 +212,48 @@ public:
}
};
```
+
+
+
+
+## 04) [Single Number II](https://leetcode.com/problems/single-number-ii/)
+
+### Difficulty
+
+![](https://img.shields.io/badge/Medium-orange?style=for-the-badge)
+
+### Related Topic
+
+`Array` `Bit Manipulation`
+
+### Code
+
+
+```cpp
+class Solution {
+public:
+ int singleNumber(vector& nums) {
+ // Variable to store the single number
+ int single = 0;
+
+ // Loop through each bit position from 0 to 31
+ for(int bits = 0, curr_bit = 0; bits < 32; bits++, curr_bit = 0) {
+ // Iterate over each element in the vector
+ for(auto& i : nums) {
+ // Check if the current bit is set in the element
+ if(i & (1ll << bits))
+ curr_bit++;
+ }
+
+ // Check if the count of the current bit is not a multiple of 3
+ if(curr_bit % 3 == 1)
+ // Set the corresponding bit in the single variable
+ single |= (1 << bits);
+ }
+
+ // Return the single number
+ return single;
+ }
+};
+```
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