diff --git a/Find the missing integer/saishwari.c b/Find the missing integer/saishwari.c
new file mode 100644
index 0000000..969dd6f
--- /dev/null
+++ b/Find the missing integer/saishwari.c	
@@ -0,0 +1,28 @@
+#include <stdio.h>
+
+int findMissingInteger(int arr[], int n) {
+    // Calculate the expected sum of integers from 1 to n+1
+    int expectedSum = (n + 1) * (n + 2) / 2;
+    
+    // Calculate the actual sum of elements in the array
+    int actualSum = 0;
+    for (int i = 0; i < n; i++) {
+        actualSum += arr[i];
+    }
+    
+    // The missing integer is the difference between the expected and actual sums
+    int missingInteger = expectedSum - actualSum;
+    
+    return missingInteger;
+}
+
+int main() {
+    int arr[] = {1, 2, 4, 6, 3, 7, 8};
+    int n = sizeof(arr) / sizeof(arr[0]);
+    
+    int missingInteger = findMissingInteger(arr, n);
+    
+    printf("The missing integer is: %d\n", missingInteger);
+    
+    return 0;
+}
diff --git a/Subarrays with equal 1s and 0s/saishwari.java b/Subarrays with equal 1s and 0s/saishwari.java
new file mode 100644
index 0000000..cedebc2
--- /dev/null
+++ b/Subarrays with equal 1s and 0s/saishwari.java	
@@ -0,0 +1,31 @@
+public class SubarraysWithEqualOnesAndZeros {
+    public static int countSubarrays(int[] nums) {
+        int count = 0;
+        int sum = 0;
+        HashMap<Integer, Integer> map = new HashMap<>();
+        
+        // Initialize the sum to 0 with count 1 (for the empty subarray)
+        map.put(0, 1);
+        
+        for (int num : nums) {
+            // Calculate the running sum
+            sum += num;
+            
+            // If the sum - k has been seen before, add its count to the result
+            if (map.containsKey(sum - 0)) {
+                count += map.get(sum - 0);
+            }
+            
+            // Update the count for the current sum
+            map.put(sum, map.getOrDefault(sum, 0) + 1);
+        }
+        
+        return count;
+    }
+
+    public static void main(String[] args) {
+        int[] nums = {0, 1, 0, 1, 0};
+        int result = countSubarrays(nums);
+        System.out.println("Count of subarrays with equal 1s and 0s: " + result);
+    }
+}