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  1. Prepare
  2. Algorithms
  3. Warmup
  4. Time Conversion
  5. Discussions

Time Conversion

  • yefrosynii
     + 0 comments
    function timeConversion(s: string): string {
    const ampm = s.substring(s.length -2, s.length).toUpperCase() as "AM" | "PM";
    let hour: number = parseInt(s.substring(0, 2));
    
    if (Number.isNaN(hour)) throw new Error("Hour is NaN");
    
    if (ampm === "AM" && hour === 12) {
        hour = 0;
    } else if (ampm === "PM" && hour < 12) {
        hour += 12;
    }
    
    return `${String(hour).padStart(2, "0")}${s.substring(2, s.length - 2)}`;
}