本文介绍了如何扭转KSH字符串的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

请帮我解决这个问题,我有一个数组女巫包括1000线,数量的,视为字符串,我要为所有的人由一个扭转他们的,我的问题是如何扭转他们,因为我有使用KSH或者使用bash或某事会这么容易.....我现在是这样的,但
转=$ REV $ {副本:$ Y:1}中的ksh 不起作用。

  I = 0
而[[$ I -lt 999]

    REV =
    VAR = $ {xnumbers [$ i]}
    副本= $ {VAR}
    LEN = $ {#}副本
    Y = $(表达式$ LEN - 1)
    而[[$ Y -ge 0]
    做
        REV =$ REV $ {副本:$ Y:1}
        回声Y =$ Y
        Y = $(表达式$ Y - 1)
    DONE    回声我=$ I
    回声REV =$ REV
    #xnumbers [$ i] = $(表达式$ xnumbers [$ i]|$ REV)
    回声XUM =$ {xnumbers [$ i]}
    回声##############################################
    I = $(表达式$ I + 1)
DONE


解决方案

我不知道为什么我们不能使用内置的REV功能。

  $ 798回声|转
897

您也可以尝试:

  $ 798回声| AWK'{为(i =长度; I = 0;!我 - )X = X SUBSTR($ 0,I,1);} END {打印X}
897

please help me with this problem, i have an array witch includes 1000 lines with number which are treated as strings and i want for all of them to reverse them one by one, my problem is how to reverse them because i have to use ksh or else with bash or something it would be so easy..... what i have now is this, but rev="$rev${copy:$y:1}" doesnt work in ksh.

i=0
while [[ $i -lt 999 ]]
do  
    rev=""
    var=${xnumbers[$i]}
    copy=${var}
    len=${#copy}
    y=$(expr $len - 1)
    while [[ $y -ge 0 ]]
    do  
        rev="$rev${copy:$y:1}"
        echo "y = " $y
        y=$(expr $y - 1)
    done

    echo "i = " $i
    echo "rev = " $rev
    #xnumbers[$i]=$(expr $xnumbers[$i] "|" $rev)
    echo "xum = " ${xnumbers[$i]}
    echo "##############################################"
    i=$(expr $i + 1)
done
解决方案

I am not sure why we cannot use built in rev function.

$ echo 798|rev
897

You can also try:

$ echo 798 | awk '{ for(i=length;i!=0;i--)x=x substr($0,i,1);}END{print x}'
897

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09-18 14:02