time conversion program

Author: sanjaydeveloper15

String-Questions/12hours-to-24hours.js

@@ -0,0 +1,30 @@
+function timeConversion(s) {
+ const hoursMap = {
+ '12': 12,
+ '01': 13,
+ '02': 14,
+ '03': 15,
+ '04': 16,
+ '05': 17,
+ '06': 18,
+ '07': 19,
+ '08': 20,
+ '09': 21,
+ '10': 22,
+ '11': 23
+ }
+ const timeArr = s.split(":")
+ let hour = timeArr[0], minute = timeArr[1], seconds = timeArr[2]
+ if (s.indexOf('PM') != -1) { // PM case
+ seconds = seconds.replace('PM', '')
+ return `${hoursMap[hour]}:${minute}:${seconds}`
+ }
+ if (s.indexOf('AM') != -1) { // AM case
+ hour = (hour === '12' || hour === 12) ? '00' : hour
+ seconds = seconds.replace('AM', '')
+ return `${hour}:${minute}:${seconds}`
+ }
+ return null
+}
+
+console.log(timeConversion('12:40:22PM'))