algorithm/tech-interview-handbook
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Tay Yang Shun
2017-09-20 15:27:28 +08:00
commit 2182a70770
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19
utilities/isSubsequence.js Normal file
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function isSubsequence(s, t) {
if (s.length > t.length) {
return false;
}
let matchedLength = 0;
for (let i = 0; i < t.length; i++) {
if (matchedLength < s.length && s[matchedLength] === t[i]) {
matchedLength += 1;
}
}
return matchedLength === s.length;
}
console.log(isSubsequence('abc', 'abcde') === true);
console.log(isSubsequence('abd', 'abcde') === true);
console.log(isSubsequence('abf', 'abcde') === false);
console.log(isSubsequence('abef', 'abcde') === false);
console.log(isSubsequence('abcdef', 'abcde') === false);
console.log(isSubsequence('a', 'abcde') === true);