lev_dist

test/levenshteinDistance/levenshteinDistance.js

@@ -0,0 +1,18 @@
+const levenshteinDistance  = (string1,string2) => {
+if(string1.length === 0) return string2.length;
+if(string2.length === 0) return string1.length;
+let matrix = Array(string2.length+ 1).fill(0).map((x,i) => [i]);
+matrix[0] = Array(string1.length + 1).fill(0).map((x,i) => i);
+for(i = 1;i <= string2.length;i++){
+for(j = 1;j<=string1.length; j++){
+if(string2[i-1] === string1[j-1]){
+matrix[i][j] = matrix[i-1][j-1];
+}
+else{
+matrix[i][j] = Math.min(matrix[i-1][j-1]+1,matrix[i][j-1]+1,matrix[i-1][j]+1);
+}
+}
+}
+return matrix[string2.length][string1.length];
+};
+module.exports = levenshteinDistance;

test/levenshteinDistance/levenshteinDistance.test.js

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+const test = require('tape');
+const levenshteinDistance = require('./levenshteinDistance.js');
+
+test('Testing levenshteinDistance', (t) => {
+  //For more information on all the methods supported by tape
+  //Please go to https://github.com/substack/tape
+  t.true(typeof levenshteinDistance === 'function', 'levenshteinDistance is a Function');
+  //t.deepEqual(levenshteinDistance(args..), 'Expected');
+  //t.equal(levenshteinDistance(args..), 'Expected');
+  //t.false(levenshteinDistance(args..), 'Expected');
+  //t.throws(levenshteinDistance(args..), 'Expected');
+  t.end();
+});