I have a string 2A some text 2B 2C some text 2D and I want to swap 2 with its' next character.
The result will be A2 some text B2 C2 some text D2.
How can I achieve it?
I tried as below but it doesn't work.
const str = '2A some text 2B 2C some text 2D';
const strArray = str.split("");
const result = str.replace(/2/gm,(match,index)=>{
return strArray[index+1]+match;
})
document.write(result)Using regex capture group
Regex Demo
https://regex101.com/r/k5UXf7/1
const str = '2A some text 2B 2C some text 2D';
const result = str.replace(/(2)([A-Z])\b/g, '$2$1')
document.write(result)OR
const str = '2A some text 2B 2C some text 2D';
const result = str.replace(/(2)([A-Z])\b/g, (match, p1, p2) => p2 + p1)
document.write(result)Here's a simple way to achieve the result using Regex
const str = '2A some text 2B 2C some text 2D';
const result = str.replace(/2(.)/gm, "$1" + "2")
document.write(result)
Limited solution:
const s = '2A some text 2B 2C some text 2D';
(function(s) {
let swapped = [...s]
for (let i = swapped.length; i--;) {
if (swapped[i] === "2") {
swapped[i] = swapped[i + 1]
swapped[i + 1] = "2"
}
}
console.log(swapped.join(''))
})(s);