Create 1945-sum-of-digits-of-string-after-convert.js

Author: everthis

1945-sum-of-digits-of-string-after-convert.js

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+/**
+ * @param {string} s
+ * @param {number} k
+ * @return {number}
+ */
+const getLucky = function(s, k) {
+  let res = 0
+  const a = 'a'.charCodeAt(0)
+  const arr = []
+  for(let ch of s) {
+    arr.push(ch.charCodeAt(0) - a  + 1)
+  }
+  let str = arr.join('').split('').map(e => +e)
+  let prev = str, sum = 0
+  while(k > 0) {
+    // let tmp = 0
+    let tmp = prev.reduce((ac, e) => ac + e, 0)
+    // console.log(tmp)
+    prev = `${tmp}`.split('').map(e => +e)
+    sum = tmp
+    k--
+  }
+  
+  return sum
+};