Update read-n-characters-given-read4.cpp

kamyu104 · web-flow · commit 656c0ac99abd · 2018-08-04T14:19:09.000+08:00
diff --git a/C++/read-n-characters-given-read4.cpp b/C++/read-n-characters-given-read4.cpp
@@ -13,16 +13,12 @@ class Solution {
     int read(char *buf, int n) {
         int read_bytes = 0;
         char buffer[4];
-        for (int i = 0; i <= n / 4; ++i) {
-            if (int size = read4(buffer)) {
-                size = min(size, n - read_bytes);
-                for (int j = 0; j < size; ++j) {
-                    buf[read_bytes++] = buffer[j];
-                }
-            } else {
-                break;
+        while (int size = read4(buffer)) {
+            size = min(size, n - read_bytes);
+            for (int i = 0; i < size; ++i) {
+                buf[read_bytes++] = buffer[i];
             }
         }
-        return min(read_bytes, n);
+        return read_bytes;
     }
 };
