feat: Added Kadane's Algorithm in Rust (Rust/dynamic_programming/kadane_algo.rs)

Rust/dynamic_programming/Kadane_algo.rs

@@ -0,0 +1,25 @@
+// Algorithm: Kadane's Algorithm
+// Description: Finds the maximum subarray sum in a slice in O(n) time using dynamic programming.
+// Usage: Run with `rustc kadane.rs && ./kadane`.
+
+fn kadane(arr: &[i32]) -> i32 {
+    if arr.is_empty() {
+        return 0;
+    }
+
+    let mut max_current = arr[0];
+    let mut max_global = arr[0];
+
+    for &num in &arr[1..] {
+        max_current = i32::max(num, max_current + num);
+        max_global = i32::max(max_global, max_current);
+    }
+
+    max_global
+}
+
+fn main() {
+    let arr = [-2, 1, -3, 4, -1, 2, 1, -5, 4];
+    let max_sum = kadane(&arr);
+    println!("Maximum subarray sum is {}", max_sum);
+}