fix: code style

Author: yanglbme

solution/3600-3699/3663.Find The Least Frequent Digit/README.md

@@ -123,7 +123,7 @@ public:
             ++cnt[n % 10];
         }
         int ans = 0, f = 1 << 30;
-        for (int x = 0; x <  10; ++x) {
+        for (int x = 0; x < 10; ++x) {
             if (cnt[x] > 0 && cnt[x] < f) {
                 f = cnt[x];
                 ans = x;

solution/3600-3699/3663.Find The Least Frequent Digit/README_EN.md

@@ -119,7 +119,7 @@ public:
             ++cnt[n % 10];
         }
         int ans = 0, f = 1 << 30;
-        for (int x = 0; x <  10; ++x) {
+        for (int x = 0; x < 10; ++x) {
             if (cnt[x] > 0 && cnt[x] < f) {
                 f = cnt[x];
                 ans = x;

solution/3600-3699/3663.Find The Least Frequent Digit/Solution.cpp

@@ -6,7 +6,7 @@ class Solution {
             ++cnt[n % 10];
         }
         int ans = 0, f = 1 << 30;
-        for (int x = 0; x <  10; ++x) {
+        for (int x = 0; x < 10; ++x) {
             if (cnt[x] > 0 && cnt[x] < f) {
                 f = cnt[x];
                 ans = x;