add 2018

code_min_integer_2018.cpp

@@ -0,0 +1,24 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<string.h>
+
+void min_integer(int a[], int n) {
+    int* tmp = (int*)malloc(4 * n);
+    memset(tmp, 0, n * 4);
+    int i;
+    for (i = 0;i < n;i++) {
+        if (a[i] <= n && a[i] > 0) {
+            tmp[a[i] - 1] = 1;
+        }
+    }
+    for (i = 0;i < n;i++) {
+        if (tmp[i] == 0)break;
+    }
+    printf("%d", i + 1);
+}
+
+int main() {
+    int a[] = { -5,3,2,3 };
+    min_integer(a, sizeof(a) / 4);
+    return 0;
+}