91. Decode Ways

123456789101112131415161718192021222324252627282930313233343536373839404142/**  * @param {string} s  * @return {number}  */ var numDecodings = function(s) {   const n = s.length;   let f0 = 1;   let f1 = s[0] === ‘0’ ? 0 : 1;   let fn = 0;   for (let i = 1; i < n; i++) {     // ***?0… Continue reading 91. Decode Ways

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