[backend]将testdata/下的测例替换为了赛方测试用例，更新了测试脚本

testdata/h_functional/16_k_smallest.sy

@@ -0,0 +1,58 @@
+const int maxN = 1000;
+const int space = 32;
+int array[maxN];
+
+void swap(int i, int j) {
+  int tmp = array[i];
+  array[i] = array[j];
+  array[j] = tmp;
+}
+
+int findPivot(int start, int end) {
+  int pivot = array[end];
+
+  int pIndex = start, i = start;
+  while (i < end) {
+    if (array[i] <= pivot) {
+      swap(i, pIndex);
+      pIndex = pIndex + 1;
+    }
+    i = i + 1;
+  }
+  swap(pIndex, end);
+  return pIndex;
+}
+
+void findSmallest(int low, int high, int k, int n) {
+  if (low == high)
+    return;
+  else {
+    int pIndex = findPivot(low, high);
+    if (k == pIndex) {
+      int i = 0;
+      while (i < pIndex) {
+        putint(array[i]);
+        putch(space);
+        i = i + 1;
+      }
+    }
+    else if (k < pIndex) {
+      findSmallest(low, pIndex - 1, k, n);
+    }
+    else {
+      findSmallest(pIndex + 1, high, k, n);
+    }
+  }
+}
+
+int main() {
+  int n = getint(), k = getint();
+  int i = 0;
+  while (i < n) {
+    array[i] = getint();
+    i = i + 1;
+  }
+  int low = 0, high = n - 1;
+  findSmallest(low, high, k, n);
+  return 0;
+}