Description
Implement strStr().
Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.
Solution
https://leetcode.com/submissions/detail/108761593/
/**
* @param {string} haystack
* @param {string} needle
* @return {number}
*/
var strStr = function(haystack, needle) {
var h_length = haystack.length,
n_length = needle.length;
for(var i=0; ;i++) {
for(var j=0; ; j++) {
if(j == n_length)
return i;
if(h_length-n_length < i)
return -1
if(haystack.charAt(i+j) != needle.charAt(j)) {
break;
}
}
}
};
Leetcode---28. Implement strStr()
原文：http://www.cnblogs.com/samo/p/7135654.html