Vue Js generate all possible permutations of a string:To generate all possible permutations of a string in Vue.js, you can use a recursive approach. Start by defining a function that takes the original string as an input and an empty array to store the permutations. Within the function, if the string length is 1 or less, push the string into the array. Otherwise, iterate over each character in the string. For each character, create a new string without that character and recursively call the function with the new string. Concatenate the current character with each permutation returned from the recursive call .

How can Vue js be used to generate all possible permutations of a given string?

The method “generatePermutations” is called when a button or any trigger is clicked. It initializes the permutations array and then calls the recursive method “permute” with the input string as an array of characters, the left index (0), and the right index (length – 1).

The “permute” method implements a backtracking algorithm to generate all possible permutations. It checks if the left and right indices are the same. If they are, it means that a permutation has been completed, so the current permutation (obtained by joining the characters array) is added to the permutations array. Otherwise, it iterates through the characters from the left index to the right index and swaps the characters accordingly. Then, it recursively calls itself, increasing the left index by 1, to generate permutations for the remaining characters. After each recursive call, it swaps the characters back (backtracking) to maintain the original order.

The “swap” method is a helper function that swaps two characters in the given array.

Once the permutations are generated, they can be accessed and displayed in the Vue template or used for further processing in the application

Vue Js generate all possible permutations of a string Example

<script type="module" >
    const app = new Vue({
    el: "#app",
    data() {
        return {
            inputString: 'ABC',
            permutations: [],
        };
    },
    methods: {
        generatePermutations() {
            const chars = this.inputString.split('');
            this.permutations = [];
            this.permute(chars, 0, chars.length - 1);
        },
        permute(chars, left, right) {
            if (left === right) {
                this.permutations.push(chars.join(''));
            } else {
                for (let i = left; i <= right; i++) {
                    this.swap(chars, left, i);
                    this.permute(chars, left + 1, right);
                    this.swap(chars, left, i); // backtrack
                }
            }
        },
        swap(chars, i, j) {
            const temp = chars[i];
            chars[i] = chars[j];
            chars[j] = temp;
        },
    },
});
</script>

Output of Vue Js generate all possible permutations of a string