val number:Double = 1.23456
println(Math.round(number))                     // 小数第1位四捨五入 : 1
println(Math.round(number * 10.0) / 10.0)       // 小数第2位四捨五入 : 1.2
println(Math.round(number * 100.0) / 100.0)     // 小数第3位四捨五入 : 1.23
println(Math.round(number * 1000.0) / 1000.0)   // 小数第4位四捨五入 : 1.235

val number:Double = 1.23456
println(Math.ceil(number))                     // 小数第1位四捨五入 : 2.0
println(Math.ceil(number * 10.0) / 10.0)       // 小数第2位四捨五入 : 1.3
println(Math.ceil(number * 100.0) / 100.0)     // 小数第3位四捨五入 : 1.24
println(Math.ceil(number * 1000.0) / 1000.0)   // 小数第4位四捨五入 : 1.235

val number:Double = 1.23456
println(Math.floor(number))                   // 小数第1位四捨五入 : 1.0
println(Math.floor(number * 10.0) / 10.0)     // 小数第2位四捨五入 : 1.2
println(Math.floor(number * 100.0) / 100.0)   // 小数第3位四捨五入 : 1.23
println(Math.floor(number * 1000.0) / 1000.0) // 小数第4位四捨五入 : 1.234

/*
=========================================================
[概  要] 全角から半角へ置換する
[引  数] target        : 変換対象の文字列
[戻り値] 変換後の文字列
[備  考]
=========================================================
*/
fun convertIntoHalfFromFull(target : String ):String
{
    var str : String

    //アルファベット（大文字）の変換
    str = target.replace("Ａ","A" ).replace("Ｂ","B" ).replace("Ｃ","C" ).replace("Ｄ","D" ).replace("Ｅ","E" ).replace("Ｆ","F" ).replace("Ｇ","G" ).replace("Ｈ","H" ).replace("Ｉ","I" ).replace("Ｊ","J" ).replace("Ｋ","K" ).replace("Ｌ","L" ).replace("Ｍ","M" ).replace("Ｎ","N" ).replace("Ｏ","O" ).replace("Ｐ","P" ).replace("Ｑ","Q" ).replace("Ｒ","R" ).replace("Ｓ","S" ).replace("Ｔ","T" ).replace("Ｕ","U" ).replace("Ｖ","V" ).replace("Ｗ","W" ).replace("Ｘ","X" ).replace("Ｙ","Y" ).replace("Ｚ","Z" ) 
    //アルファベット（小文字）の変換
    str = str.replace("ａ","a" ).replace("ｂ","b" ).replace("ｃ","c" ).replace("ｄ","d" ).replace("ｅ","e" ).replace("ｆ","f" ).replace("ｇ","g" ).replace("ｈ","h" ).replace("ｉ","i" ).replace("ｊ","j" ).replace("ｋ","k" ).replace("ｌ","l" ).replace("ｍ","m" ).replace("ｎ","n" ).replace("ｏ","o" ).replace("ｐ","p" ).replace("ｑ","q" ).replace("ｒ","r" ).replace("ｓ","s" ).replace("ｔ","t" ).replace("ｕ","u" ).replace("ｖ","v" ).replace("ｗ","w" ).replace("ｘ","x" ).replace("ｙ","y" ).replace("ｚ","z" )
    //数値の変換
    str = str.replace("０","0" ).replace("１","1" ).replace("２","2" ).replace("３","3" ).replace("４","4" ).replace("５","5" ).replace("６","6" ).replace("７","7" ).replace("８","8" ).replace("９","9" )
    //カタカナの変換
    str = str.replace("ア","ｱ" ).replace("イ","ｲ" ).replace("ウ","ｳ" ).replace("エ","ｴ" ).replace("オ","ｵ" ).replace("カ","ｶ" ).replace("キ","ｷ" ).replace("ク","ｸ" ).replace("ケ","ｹ" ).replace("コ","ｺ" ).replace("サ","ｻ" ).replace("シ","ｼ" ).replace("ス","ｽ" ).replace("セ","ｾ" ).replace("ソ","ｿ" ).replace("タ","ﾀ" ).replace("チ","ﾁ" ).replace("ツ","ﾂ" ).replace("テ","ﾃ" ).replace("ト","ﾄ" ).replace("ナ","ﾅ" ).replace("ニ","ﾆ" ).replace("ヌ","ﾇ" ).replace("ネ","ﾈ" ).replace("ノ","ﾉ" ).replace("ハ","ﾊ" ).replace("ヒ","ﾋ" ).replace("フ","ﾌ" ).replace("ヘ","ﾍ" ).replace("ホ","ﾎ" ).replace("マ","ﾏ" ).replace("ミ","ﾐ" ).replace("ム","ﾑ" ).replace("メ","ﾒ" ).replace("モ","ﾓ" ).replace("ヤ","ﾔ" ).replace("ユ","ﾕ" ).replace("ヨ","ﾖ" ).replace("ラ","ﾗ" ).replace("リ","ﾘ" ).replace("ル","ﾙ" ).replace("レ","ﾚ" ).replace("ロ","ﾛ" ).replace("ワ","ﾜ" ).replace("ヲ","ｦ" ).replace("ン","ﾝ" ).replace("ァ","ｧ" ).replace("ィ","ｨ" ).replace("ゥ","ｩ" ).replace("ェ","ｪ" ).replace("ォ","ｫ" ).replace("ヵ","ｶ" ).replace("ヶ","ｹ" ).replace("ッ","ｯ" ).replace("ャ","ｬ" ).replace("ュ","ｭ" ).replace("ョ","ｮ" ).replace("ヮ","ﾜ" ).replace("ヴ","ｳﾞ" ).replace("ガ","ｶﾞ" ).replace("ギ","ｷﾞ" ).replace("グ","ｸﾞ" ).replace("ゲ","ｹﾞ" ).replace("ゴ","ｺﾞ" ).replace("ザ","ｻﾞ" ).replace("ジ","ｼﾞ" ).replace("ズ","ｽﾞ" ).replace("ゼ","ｾﾞ" ).replace("ゾ","ｿﾞ" ).replace("ダ","ﾀﾞ" ).replace("ヂ","ﾁﾞ" ).replace("ヅ","ﾂﾞ" ).replace("デ","ﾃﾞ" ).replace("ド","ﾄﾞ" ).replace("バ","ﾊﾞ" ).replace("ビ","ﾋﾞ" ).replace("ブ","ﾌﾞ" ).replace("ベ","ﾍﾞ" ).replace("ボ","ﾎﾞ" ).replace("パ","ﾊﾟ" ).replace("ピ","ﾋﾟ" ).replace("プ","ﾌﾟ" ).replace("ペ","ﾍﾟ" ).replace("ポ","ﾎﾟ" )
    //記号の変換
    str = str.replace("！","!" ).replace("＃","#" ).replace("＄","$" ).replace("％","%" ).replace("＆","&" ).replace("（","(" ).replace("）",")" ).replace("ー","ｰ" ).replace("－","-" ).replace("＝","=" ).replace("＾","^" ).replace("～","~" ).replace("｜","|" ).replace("＠","@" ).replace("‘","`" ).replace("「","｢" ).replace("［","[" ).replace("｛","{" ).replace("＋","+" ).replace("：",":" ).replace("＊","*" ).replace("」","｣" ).replace("］","]" ).replace("｝","}" ).replace("、","､" ).replace("，","," ).replace("＜","<" ).replace("。","｡" ).replace("．","." ).replace("＞",">" ).replace("・","･" ).replace("／","/" ).replace("？","?" ).replace("＿","_" )
    
    return str 
}

println(convertIntoHalfFromFull("ＡＢＣＤＥｆｇｈｉアイウ１２３！＃＄％"))  --//ABCDEfghiｱｲｳ123!#$%

/*
=========================================================
[概  要] 半角から全角へ置換する
[引  数] target        : 置換対象の文字列
[戻り値] 置換後の文字列
[備  考]
=========================================================
*/
fun convertIntoFullFromHalf(target : String ):String
{
    var str : String

    //アルファベット（大文字）の変換
    str = target.replace("A","Ａ" ).replace("B","Ｂ" ).replace("C","Ｃ" ).replace("D","Ｄ" ).replace("E","Ｅ" ).replace("F","Ｆ" ).replace("G","Ｇ" ).replace("H","Ｈ" ).replace("I","Ｉ" ).replace("J","Ｊ" ).replace("K","Ｋ" ).replace("L","Ｌ" ).replace("M","Ｍ" ).replace("N","Ｎ" ).replace("O","Ｏ" ).replace("P","Ｐ" ).replace("Q","Ｑ" ).replace("R","Ｒ" ).replace("S","Ｓ" ).replace("T","Ｔ" ).replace("U","Ｕ" ).replace("V","Ｖ" ).replace("W","Ｗ" ).replace("X","Ｘ" ).replace("Y","Ｙ" ).replace("Z","Ｚ" )
    //アルファベット（小文字）の変換
    str = str.replace("a","ａ" ).replace("b","ｂ" ).replace("c","ｃ" ).replace("d","ｄ" ).replace("e","ｅ" ).replace("f","ｆ" ).replace("g","ｇ" ).replace("h","ｈ" ).replace("i","ｉ" ).replace("j","ｊ" ).replace("k","ｋ" ).replace("l","ｌ" ).replace("m","ｍ" ).replace("n","ｎ" ).replace("o","ｏ" ).replace("p","ｐ" ).replace("q","ｑ" ).replace("r","ｒ" ).replace("s","ｓ" ).replace("t","ｔ" ).replace("u","ｕ" ).replace("v","ｖ" ).replace("w","ｗ" ).replace("x","ｘ" ).replace("y","ｙ" ).replace("z","ｚ" )
    //数値の変換
    str = str.replace("0","０" ).replace("1","１" ).replace("2","２" ).replace("3","３" ).replace("4","４" ).replace("5","５" ).replace("6","６" ).replace("7","７" ).replace("8","８" ).replace("9","９" )
    //カタカナの変換
    str = str.replace("ｱ","ア" ).replace("ｲ","イ" ).replace("ｳ","ウ" ).replace("ｴ","エ" ).replace("ｵ","オ" ).replace("ｶ","カ" ).replace("ｷ","キ" ).replace("ｸ","ク" ).replace("ｹ","ケ" ).replace("ｺ","コ" ).replace("ｻ","サ" ).replace("ｼ","シ" ).replace("ｽ","ス" ).replace("ｾ","セ" ).replace("ｿ","ソ" ).replace("ﾀ","タ" ).replace("ﾁ","チ" ).replace("ﾂ","ツ" ).replace("ﾃ","テ" ).replace("ﾄ","ト" ).replace("ﾅ","ナ" ).replace("ﾆ","ニ" ).replace("ﾇ","ヌ" ).replace("ﾈ","ネ" ).replace("ﾉ","ノ" ).replace("ﾊ","ハ" ).replace("ﾋ","ヒ" ).replace("ﾌ","フ" ).replace("ﾍ","ヘ" ).replace("ﾎ","ホ" ).replace("ﾏ","マ" ).replace("ﾐ","ミ" ).replace("ﾑ","ム" ).replace("ﾒ","メ" ).replace("ﾓ","モ" ).replace("ﾔ","ヤ" ).replace("ﾕ","ユ" ).replace("ﾖ","ヨ" ).replace("ﾗ","ラ" ).replace("ﾘ","リ" ).replace("ﾙ","ル" ).replace("ﾚ","レ" ).replace("ﾛ","ロ" ).replace("ﾜ","ワ" ).replace("ｦ","ヲ" ).replace("ﾝ","ン" ).replace("ｧ","ァ" ).replace("ｨ","ィ" ).replace("ｩ","ゥ" ).replace("ｪ","ェ" ).replace("ｫ","ォ" ).replace("ｶ","ヵ" ).replace("ｹ","ヶ" ).replace("ｯ","ッ" ).replace("ｬ","ャ" ).replace("ｭ","ュ" ).replace("ｮ","ョ" ).replace("ﾜ","ヮ" ).replace("ｳﾞ","ヴ" ).replace("ｶﾞ","ガ" ).replace("ｷﾞ","ギ" ).replace("ｸﾞ","グ" ).replace("ｹﾞ","ゲ" ).replace("ｺﾞ","ゴ" ).replace("ｻﾞ","ザ" ).replace("ｼﾞ","ジ" ).replace("ｽﾞ","ズ" ).replace("ｾﾞ","ゼ" ).replace("ｿﾞ","ゾ" ).replace("ﾀﾞ","ダ" ).replace("ﾁﾞ","ヂ" ).replace("ﾂﾞ","ヅ" ).replace("ﾃﾞ","デ" ).replace("ﾄﾞ","ド" ).replace("ﾊﾞ","バ" ).replace("ﾋﾞ","ビ" ).replace("ﾌﾞ","ブ" ).replace("ﾍﾞ","ベ" ).replace("ﾎﾞ","ボ" ).replace("ﾊﾟ","パ" ).replace("ﾋﾟ","ピ" ).replace("ﾌﾟ","プ" ).replace("ﾍﾟ","ペ" ).replace("ﾎﾟ","ポ" )
    //記号の変換
    str = str.replace("!","！" ).replace("#","＃" ).replace("$","＄" ).replace("%","％" ).replace("&","＆" ).replace("(","（" ).replace(")","）" ).replace("ｰ","ー" ).replace("-","－" ).replace("=","＝" ).replace("^","＾" ).replace("~","～" ).replace("|","｜" ).replace("@","＠" ).replace("`","‘" ).replace("｢","「" ).replace("[","［" ).replace("{","｛" ).replace("+","＋" ).replace(":","：" ).replace("*","＊" ).replace("｣","」" ).replace("]","］" ).replace("}","｝" ).replace("､","、" ).replace(",","，" ).replace("<","＜" ).replace("｡","。" ).replace(".","．" ).replace(">","＞" ).replace("･","・" ).replace("/","／" ).replace("?","？" ).replace("_","＿" )

    return str 
}

println(convertIntoFullFromHalf("ABCDEfghiｱｲｳ123!#$%"))  --ＡＢＣＤＥｆｇｈｉアイウ１２３！＃＄％

"この文字から取得する".substring(開始位置,終了位置)

/*
=========================================================
[概  要] 文字列を右から〇文字取得する
[引  数] target        : この文字列から切り取る
[引  数] num           : 切り取り文字数
[戻り値] 取得後の文字列
[備  考] 
=========================================================
 */
 fun right(target : String , num : Int):String
 {
     return target.substring(target.length - num, target.length)
 }

println(right("abcdefghijkmn",5)) //ijkmn

"この文字から取得する".substring(開始位置,終了位置)

/*
=========================================================
[概  要] 文字列から〇文字目から〇文字取得する。
[引  数] target        : この文字列から切り取る
[引  数] start         : 切り取り開始位置(1から始まり)
[引  数] num           : 切り取り文字数
[戻り値] 取得後の文字列
[備  考] startからのnumが文字数を超える場合、
         startからすべての文字列を返す
=========================================================
*/
fun mid(target : String , start : Int , num : Int):String
{

    if ((start - 1) < 0){ return "" }else if( (start - 1) + num > target.length){
        return target.substring((start - 1))
    }

    return target.substring((start - 1) , (start - 1) + num)
}

println(mid("abcdefghijklm",1,5)) //abcde
println(mid("abcdefghijklm",3,4)) //cdef

Regex("この文字を探す").containsMatchIn("この文字から探す")

/*
=========================================================
[概  要] 文字列内に指定された文字列があるか調べる
[引  数] target        : この文字列から探す
[引  数] findString    : 探す文字列
[引  数] trimFlg       : trimをつけるかのフラグ
                       （True:Trimつける、False:Trimつけない、Default：False）
[戻り値] True：ある、False：ない
[備  考]
========================================================="
 */
fun checkCharExists(target : String , findString : String , trimFlg : Boolean=false) : Boolean
{

    if(trimFlg == true){
        //trimあり
        return Regex(findString.trim()).containsMatchIn(target.trim())
    }else{
        //trimなし
        return Regex(findString).containsMatchIn(target)
    }

}

println(checkCharExists("abcde","cd")) // true 
println(checkCharExists("abcde","ef")) // false