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26 lines
498 B
26 lines
498 B
/**
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* @param {string} s
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* @param {number} numRows
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* @return {string}
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*/
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var convert = function(s, numRows) {
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if (numRows === 1){
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return s;
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}
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let output = "";
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let n = s.length;
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let cycleLen = 2 * numRows - 2;
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for (let i = 0; i < numRows; i++){
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for (let j = 0; j + i < n; j += cycleLen) {
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output += s.charAt(j+i);
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if (i !== 0 && i !== numRows-1 && j + cycleLen - i < n){
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output += s.charAt(j + cycleLen -i);
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}
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}
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}
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return output;
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};
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