Vue Js Compress Decompress string

e Js Compress Decompress string:Vue.js does not provide built-in functions for string compression or decompression. However, in general, to compress a string, you can iterate through it, count consecutive occurrences of each character, and replace them with the character followed by the count. For example, “aaabbbccc” becomes “a3b3c3”. To decompress, iterate through the compressed string, check for a digit after each character, and repeat the character for the indicated number of times. For example, “a3b3c3” becomes “aaabbbccc”

How can I compress a string using Vue.js?

This code snippet demonstrates a Vue.js implementation for compressing a string.

The Vue instance also defines a method called compressString(). Inside this method, the input string is iterated character by character.

If a character is the same as the next character, a counter (count) is incremented. If the next character is different or the end of the string is reached, the current character is added to the compressed string (compressed). If the counter (count) is greater than 1, it is also added to the compressed string.

Vue Js Compress String Example

<script type="module" >
    const app = new Vue({
    el: "#app",
    data: {
        inputString: "aabbcc",
        compressedString: "",
    },
    methods: {
        compressString() {
            if (!this.inputString) {
                this.compressedString = "";
                return;
            }

            let compressed = "";
            let count = 1;

            for (let i = 0; i < this.inputString.length; i++) {
                if (this.inputString[i] === this.inputString[i + 1]) {
                    count++;
                } else {
                    compressed += this.inputString[i];
                    if (count > 1) {
                        compressed += count;
                    }
                    count = 1;
                }
            }

            this.compressedString = compressed;
        },
    },
});
</script>

Output of Vue Js Compress String

How can a string be decompressed using Vue.js?

The provided code snippet is an example of using Vue.js to decompress a string. It uses a Vue instance with a data property called compressedString, which represents the compressed string, and an empty decompressedString property to store the result.

In the decompress method, a regular expression (/([a-z])(\d+)/g) is defined to match a lowercase letter followed by one or more digits. The replace function is then used on the compressedString, replacing each match with a callback function that repeats the character (char) by the number of times specified (count). The resulting decompressed string is stored in the decompressedString property of the Vue instance

Vue Js Decompress String Example

<script type="module" >
    const app = new Vue({
    el: "#app",
    data: {
        compressedString: 'a2b2c2',
        decompressedString: ''
    },
    methods: {
        decompress() {
            const regex = /([a-z])(\d+)/g;
            this.decompressedString = this.compressedString.replace(regex, (_, char, count) => {
                return char.repeat(parseInt(count));
            });
        }
    }
});
</script>