89 lines
2.8 KiB
C#
89 lines
2.8 KiB
C#
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using UnityEngine;
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using System;
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using System.Linq;
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public static class IntExtensions {
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public static int RandomPlusMinus(){
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return UnityEngine.Random.Range(0, 2) * 2 - 1;
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}
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public static int RandomChooseRatio(params int[] ratioArray){
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return RandomChooseRatio(new System.Random(), ratioArray);
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}
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public static int RandomChooseRatio(System.Random rand, params int[] ratioArray){
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var totalRatio = ratioArray.Sum();
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var value = rand.Next(1, totalRatio + 1);
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var result = -1;
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for(var i = 0; i < ratioArray.Length; ++i){
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if(value <= ratioArray[i]){
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result = i;
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break;
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}
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value -= ratioArray[i];
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}
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return result;
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}
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public static int PickUp(this int value, int i){
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switch(i){
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case 0:
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return 0;
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case 1:
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return value % 10;
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default:
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return (value / (int)Math.Pow(10, i - 1)) % 10;
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}
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}
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public static string ToStringWithDigitCommas(this int value){
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return string.Format("{0:#,0}", value);
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}
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public static string ToTimeString(this int value){
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int minute = value / 60;
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int second = value % 60;
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return string.Format ("{0:D2}:{1:D2}", minute, second);
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}
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/// 負数未対応
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public static string ToChineseNumerals(this int number){
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return ((long)number).ToChineseNumerals();
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}
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public static string ToChineseNumerals(this long number){
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if(number < 0) return number.ToString();
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if(number == 0) return "〇";
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string[] digit = new string[] { "", "一", "二", "三", "四", "五", "六", "七", "八", "九" };
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string[] subUnit = new string[] { "", "十", "百", "千" };
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string[] unit = new string[] { "", "万", "億", "兆", "京" };
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string str = "";
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int keta = 0;
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while(number > 0){
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int k = keta % 4;
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int n = (int)(number % 10);
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if(k == 0 && number % 10000 > 0){
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str = unit[keta / 4] + str;
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}
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if(k != 0 && n == 1){
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str = subUnit[k] + str;
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}else if(n != 0){
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str = digit[n] + subUnit[k] + str;
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}
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++keta;
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number /= 10;
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}
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return str;
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}
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public static string ToMetricPrefix(this ulong value, int decimalPoint = 1){
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string str = string.Format("{0:#,0}", value);
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if(str.Length < 4) return str;
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string result = str.Substring(0, str.IndexOf(',') + 2).Replace(',', '.');
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string[] unit = new string[] { "", "k", "M", "G", "T", "P", "E", "Z", "Y" };
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result = string.Format("{0}{1}", result, unit[Mathf.Min(str.Count(c => c == ','), unit.Length - 1)]);
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return result;
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}
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}
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