feat: add solution(s) to lc problem(s): No.67

Author: lingxier

lcof/面试题67. 把字符串转换成整数/Solution.cpp

@@ -3,31 +3,31 @@ class Solution {
     int StrToInt(string str) {
         int res = 0, bndry = INT_MAX / 10;
         int i = 0, sign = 1, length = str.size();
-        if(length == 0) {
+        if (length == 0) {
             return 0;
         }
         // 删除首部空格
-        while(str[i] == ' '){
-            if(++i == length) {
+        while (str[i] == ' ') {
+            if (++i == length) {
                 return 0;
             }
         }
-        //若有负号则标识符号位
-        if(str[i] == '-') {
+        // 若有负号则标识符号位
+        if (str[i] == '-') {
             sign = -1;
         }
-        if(str[i] == '-' || str[i] == '+') {
+        if (str[i] == '-' || str[i] == '+') {
             i++;
         }
-        for(int j = i; j < length; j++) {
-            if(str[j] < '0' || str[j] > '9') {
+        for (int j = i; j < length; j++) {
+            if (str[j] < '0' || str[j] > '9') {
                 break;
             }
-            //res>214748364越界；res=214748364且str[j] > '7'越界
-            if(res > bndry || res == bndry && str[j] > '7'){
+            // res>214748364越界；res=214748364且str[j] > '7'越界
+            if (res > bndry || res == bndry && str[j] > '7') {
                 return sign == 1 ? INT_MAX : INT_MIN;
             }
-            //从左向右遍历数字并更新结果
+            // 从左向右遍历数字并更新结果
             res = res * 10 + (str[j] - '0');
         }
         return sign * res;