From 5c5f35c535cc48ad80480892af68f1fa2a6e3c14 Mon Sep 17 00:00:00 2001
From: yige <a@wyr.me>
Date: Sun, 24 May 2020 12:34:13 +0800
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---
 README.md                                          |  6 +++++-
 ...occurs-as-a-prefix-of-any-word-in-a-sentence.js | 14 ++++++++++++++
 ...s-as-a-prefix-of-any-word-in-a-sentence.test.js |  5 +++++
 3 files changed, 24 insertions(+), 1 deletion(-)
 create mode 100644 src/string/check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence.js
 create mode 100644 test/string/check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence.test.js

diff --git a/README.md b/README.md
index 3947262..49e60b4 100644
--- a/README.md
+++ b/README.md
@@ -107,7 +107,11 @@ LeetCode 与 LintCode 解题记录。此为个人练习仓库，代码中对重
 - [最小覆盖子串](src/string/minimum-window-substring.js)
 
   - LeetCode 76. 最小覆盖子串 <https://leetcode-cn.com/problems/minimum-window-substring/>
-  -LintCode 32. 最小子串覆盖 <https://www.lintcode.com/problem/minimum-window-substring/description>
+  - LintCode 32. 最小子串覆盖 <https://www.lintcode.com/problem/minimum-window-substring/description>
+
+- [检查单词是否为句中其他单词的前缀](src/string/check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence.js)
+
+  - LeetCode 5416. 检查单词是否为句中其他单词的前缀 <https://leetcode-cn.com/problems/check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence/>
 
 ## 数组/队列/集合/映射
 
diff --git a/src/string/check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence.js b/src/string/check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence.js
new file mode 100644
index 0000000..76fe88a
--- /dev/null
+++ b/src/string/check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence.js
@@ -0,0 +1,14 @@
+/**
+ * @param {string} sentence
+ * @param {string} searchWord
+ * @return {number}
+ */
+export const isPrefixOfWord = function (sentence, searchWord) {
+  const items = sentence.split(' ')
+
+  for (const n in items) {
+    if (items[n].indexOf(searchWord) === 0) return Number(n) + 1
+  }
+
+  return -1
+}
diff --git a/test/string/check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence.test.js b/test/string/check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence.test.js
new file mode 100644
index 0000000..c2fe429
--- /dev/null
+++ b/test/string/check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence.test.js
@@ -0,0 +1,5 @@
+import { isPrefixOfWord } from '../../src/string/check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence'
+
+test('检查单词是否为句中其他单词的前缀', () => {
+  expect(isPrefixOfWord('i love eating burger', 'burg')).toBe(4)
+})