数组的值未递增

Question

I am attempting to increment the index of my array using the following way however it seems to overwrite the previous index which is wrong. Any suggestions on what I might be doing wrong.

CURRENT_INDEX=${#ARRAY_EXIST_ONLY_IN_STEPPER[@]} 
((CURRENT_INDEX++))
ARRAY_SAMENAME_SAME_SIZE[${CURRENT_INDEX}]=${FILENAMEONLY}
echo "File is present in both and both file sizes are the same : "${FILENAMEONLY} " Placed in  ${CURRENT_INDEX}"

The above code is actually being used here and I could tell the array index is being overwritten. Every-time a new entry is made in an array it is suppose to extract the current index then increment it by one and then use that index.However it looks like it is not doing that. Any suggestions on why the arrays are overwriting their previous index ?

declare -a ARRAY_SAMENAME_DIFFERENT_SIZE;
declare -a ARRAY_SAMENAME_SAME_SIZE;
declare -a ARRAY_EXIST_ONLY_IN_STEPPER

for var in ${ARRAY_WAV_FILES_IN_STEPPER[@]}
do
  FILENAMEEXTENSION=${var##*/}              
  FILENAMEONLY=${FILENAMEEXTENSION%.*}
  ################################################################################
  FIND_COMMAND_RESULT=""
  FindCommand="find ${ARRAY[1]} -iname ${FILENAMEEXTENSION}"
  FIND_COMMAND_RESULT=$(${FindCommand}) 
  echo "Working with : "${var}
  if [[ !  -z  ${FIND_COMMAND_RESULT}  ]]
  then
     #The file is present in the 0th Array index directory 
     #check if they are the same size
     CURRENT_FILESIZE=$(stat -c%s ${var})
     REMOTE_FILESIZE=$(stat -c%s ${FIND_COMMAND_RESULT})
     if [ ${CURRENT_FILESIZE} -eq ${REMOTE_FILESIZE} ] 
     then
             #The file is present in both and both file sizes are the same - Record it
             CURRENT_INDEX=${#ARRAY_EXIST_ONLY_IN_STEPPER[@]} 
             ((CURRENT_INDEX++))
             ARRAY_SAMENAME_SAME_SIZE[${CURRENT_INDEX}]=${FILENAMEONLY}
             echo "File is present in both and both file sizes are the same : "${FILENAMEONLY} " Placed in  ${CURRENT_INDEX}"
     else
             #The file is present in both but they have different sizes
             echo "The file is present in both but they have different sizes : " ${var}
             CURRENT_INDEX=${#ARRAY_SAMENAME_DIFFERENT_SIZE[@]} 
             ((CURRENT_INDEX++))
             ARRAY_SAMENAME_DIFFERENT_SIZE[${CURRENT_INDEX}]=${FILENAMEONLY}
     fi
  else
      #The file exists only in stepper
      echo "The file is only in stepper : " ${var}
      CURRENT_INDEX=${#ARRAY_EXIST_ONLY_IN_STEPPER[@]} ; ((CURRENT_INDEX++))
      ARRAY_EXIST_ONLY_IN_STEPPER[${CURRENT_INDEX}]=${FILENAMEONLY}
  fi
done 

Answer 1

有一种将项目添加到数组的更简单的方法：

ARRAY_SAMENAME_SAME_SIZE+=("${FILENAMEONLY}")