Initial commit — jibo-cli v3.0.7 with bundled node_modules

node_modules/compute-hamming/lib/index.js

@@ -0,0 +1,65 @@
+'use strict';
+
+// MODULES //
+
+var isArray = require( 'validate.io-array' ),
+	isString = require( 'validate.io-string' ),
+	isFunction = require( 'validate.io-function' );
+
+
+// HAMMING DISTANCE //
+
+/**
+* FUNCTION: hamming( a, b, accessor )
+*	Computes the Hamming distance between two sequences.
+*
+* @param {String|Array} a - array or string sequence
+* @param {String|Array} b - array or string sequence
+* @param {Function} [accessor] - accessor function for accessing array values
+* @returns {Number} Hamming distance
+*/
+function hamming( a, b, clbk ) {
+	var aType = isString( a ),
+		bType = isString( b ),
+		len,
+		d, i;
+
+	if ( !isArray( a ) && !aType ) {
+		throw new TypeError( 'hamming()::invalid input argument. Sequence must be either an array or a string. Value: `' + a + '`.' );
+	}
+	if ( !isArray( b ) && !bType ) {
+		throw new TypeError( 'hamming()::invalid input argument. Sequence must be either an array or a string. Value: `' + b + '`.' );
+	}
+	if ( aType !== bType ) {
+		throw new TypeError( 'hamming()::invalid input arguments. Sequences must be the same type; i.e., both strings or both arrays.' );
+	}
+	if ( arguments.length > 2 ) {
+		if ( !isFunction( clbk ) ) {
+			throw new TypeError( 'hamming()::invalid input argument. Accessor must be a function. Value: `' + clbk + '`.' );
+		}
+	}
+	len = a.length;
+	if ( len !== b.length ) {
+		throw new Error( 'hamming()::invalid input arguments. Sequences must be the same length.' );
+	}
+	d = 0;
+	if ( clbk ) {
+		for ( i = 0; i < len; i++ ) {
+			if ( clbk( a[i], i, 0 ) !== clbk( b[i], i, 1 ) ) {
+				d += 1;
+			}
+		}
+	} else {
+		for ( i = 0; i < len; i++ ) {
+			if ( a[ i ] !== b[ i ] ) {
+				d += 1;
+			}
+		}
+	}
+	return d;
+} // end FUNCTION hamming()
+
+
+// EXPORTS //
+
+module.exports = hamming;