18_practice4_left_right_replace

# left - right replace
#---------------------------------

x = ['0l77r3','0lr5']
def check(m):     # function that operates left & right condition
    strRepl = m.replace('', ' ')
    toStr = str(strRepl)
    toList = toStr.split(' ')
    final = ''
    for i,o in enumerate(toList):
        if o == 'l':
            getInd = toList.index(o)
            toList[i] = o.replace(toList[getInd], toList[getInd - 1])
        if o == 'r':
            getInd = toList.index(o)
            toList[i] = o.replace(toList[getInd], toList[getInd + 1])

    for i in toList:
        final += i
    return final
for m in x:
    print(check(m))