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- // O(N)
- function(str) {
- if (str.length < 2) return str;
- return str.split('').reverse().join('');
- }
- // O(N/2)
- function(str) {
- var buffer = new Buffer(str);
- for (var i=0;i< buffer.length/2; i++){
- var swap = buffer[i];
- buffer[i] = buffer[buffer.length - 1 - i];
- buffer[buffer.length - 1 - i] = swap;
- }
- return buffer.toString();
- }
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