Merge pull request gzc426#176 from 1006685929/master

gzc426 · web-flow · commit 74285778645d · 2018-12-01T10:31:18.000+08:00
666
diff --git a/2018.12.1-leetcode387/我的微信名是空格.md b/2018.12.1-leetcode387/我的微信名是空格.md
@@ -0,0 +1,18 @@
+    public static int firstUniqChar(String s) {
+        if(null == s || 0 == s.length()){
+            return -1;
+        }
+        int[] hash = new int[26];
+        char[] array = s.toCharArray();//s转为字符数组
+        for(int i = 0; i < array.length; i++){
+            int num = array[i] - 'a';  //表示这个字母在26个字母中所在的位置
+            hash[num]++;
+        }
+        for(int i = 0; i < array.length; i++){//从字符串出发
+            int num = array[i] - 'a';
+            if(hash[num] == 1){
+                return i;
+            }
+        }
+        return -1;
+    }
