Given 2D array of photos taken while John doe was on trips so I'm asked to rename pictures and replace actual name with city name where a picture was taken.
const photos = [
['photo.jpg', 'kigali','2013-09-05 14:08:09'],
['demmpa.jpg', 'kigali','2013-09-05 14:08:09'],
['third.jpg', 'kibuye','2013-02-05 12:08:09']
['forthpic.jpg', 'kampala','2013-02-05 12:08:09']
]
photos.map((photo, index)=>{
photo.filter((photo, index)=> console.log(photo))
})
Actual output
"photo.jpg"
"kigali"
"2013-09-05 14:08:09"
"demmpa.jpg"
"kigali"
"2013-09-05 14:08:09"
Expected output
kigali01.jpg
kigali02.jpg
Kibuye1.jpg
kampala1.jpg
You can do it using map. And the occurrence will just keep the number of how many times the name is repeated.
Note: if you need to add leading zeros, Please check it out How to output numbers with leading zeros in JavaScript?
const photos = [
['photo.jpg', 'kigali','2013-09-05 14:08:09'],
['demmpa.jpg', 'kigali','2013-09-05 14:08:09'],
['third.jpg', 'kibuye','2013-02-05 12:08:09'],
['forthpic.jpg', 'kampala','2013-02-05 12:08:09']
];
const occurrence = {}
const newArray = photos.map(arr => {
const ext = arr[0].split('.')[1]; // file extension
if (occurrence[arr[1]]) { // check whether the name is already there
occurrence[arr[1]]++;
return `${arr[1]}${occurrence[arr[1]]}.${ext}`;
}
occurrence[arr[1]] = 1;
return `${arr[1]}1.${ext}`;
});
console.log(newArray)let photos = [
['photo.jpg', 'kigali','2013-09-05 14:08:09'],
['demmpa.jpg', 'kigali','2013-09-05 14:08:09'],
['third.jpg', 'kibuye','2013-02-05 12:08:09'],
['forthpic.jpg', 'kampala','2013-02-05 12:08:09']
]
photos = Array.from(photos).map((photo)=>{
const format = photo[0].split('.')[1]
photo[0]=photo[1]+'.'+format
return photo
})