Adding python files

C/Easy_Challenges/horse-racing-duals.c

@@ -0,0 +1,25 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+int compare (const void *arg1, const void *arg2) {
+   return (*(int*)arg1 - *(int*)arg2);
+}
+
+int main()
+{
+    int N, diff = 2147483647;
+    scanf("%d", &N);
+    int tab[N];
+    for (int i = 0; i < N; i++)
+        scanf("%d", &tab[i]);
+
+    qsort (tab,N,sizeof(int),compare);
+    for (int i =0; i<N; i++)
+    {
+        if (abs(tab[i] - tab[i+1]) < diff)
+            diff = abs(tab[i] - tab[i+1]);
+    }
+    printf("%d\n",diff);
+
+    return 0;
+}