init commit

archive/algorithm/leetcode/20.c

@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <string.h>
+
+typedef int bool;
+
+#define false 0
+#define true 1
+
+bool isValid(char *s)
+{
+    int len = strlen(s), stackpos = 0;
+    char stack[len / 2 + 1];
+    int pos = 0;
+    len = len / 2 + 1;
+    while (s[pos] != '\x0')
+    {
+        if (stackpos >= len)
+        {
+            return false;
+        }
+        if (s[pos] == '(')
+            stack[stackpos++] = ')';
+        else if (s[pos] == '{')
+            stack[stackpos++] = '}';
+        else if (s[pos] == '[')
+            stack[stackpos++] = ']';
+        else if (stackpos <= 0 || s[pos] != stack[--stackpos])
+            return false;
+
+        pos++;
+    }
+    return stackpos == 0;
+}
+
+int main()
+{
+    isValid("(([])){}");
+    return 0;
+}