S1 and S2 are string types. Writing a function returns the same number of characters at the beginning of S1 and S2
S1 and S2 are string types. Writing a function returns the same number of characters at the beginning of S1 and S2
function fiterStr(str1,str2){
var l = str1.length > str2.length ? str2.length : str1.length, //
i = 0
while(i < l){
if(str1[i] !== str2[i])break
iPP
}
return str1.substr(0,i)
}
fiterStr('ssd','sss'); //'ss'double for loops
Please describe the problem clearly
what is the same number of characters at the beginning?
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