jikeytang/[ Javascript ] - 20140829-题目1

var countArr = [];
var exist = [];
var noExist = [];

function countStr(str) {
    for (var i = 0, l = str.length; i < l; i++) {
        countArr[str[i]] = 1;
    }
}
function checkExist(a, b) {
    countStr(a);
    for (var i = 0, l = b.length; i < l; i++) {
        if (countArr[b[i]]) {
            exist[b[i]] = 1;
        } else {
            noExist[b[i]] = 1;
        }
    }
}

var a = 'lkjgfaoids';
var b = 'adc';
checkExist(a, b);
console.log(exist);
console.log(noExist);

function checkExist(a, b) {
    var exist = b.split('').filter(function (v) {return a.indexOf(v) > -1});
    var noExist = b.split('').filter(function (v) {return a.indexOf(v) === -1});
    console.log(exist.join('') + '存在',  noExist.join('') + '不存在');
}

var a = 'lkjgfaoids';
var b = 'adc';
checkExist(a,b);

function test(a,b){ 
  var c=b ,d=b;
  for(var i=0;i<a.length;i++){
    c = c.replace(new RegExp(a[i],"gm"),'')     
  }
  for(var j=0;j<c.length;j++){
   d = d.replace(new RegExp(c[j],"gm"),'');
  }
  console.log("存在："+d + "  不存在："+c);
}
var a = 'lkjgfaoids';
var b = 'adc';
test(a,b)

            var a = 'lkjgfaoids';
            var b = 'adc';

            a = a.split('');
            b = b.split('');

            var arr1 = a.filter(function(v) { return b.indexOf(v) > -1; })  //  保存存在的
            var arr2 = b.filter(function(v) { return arr1.indexOf(v) == -1; })

            console.log( arr1.join('')+ "存在，" + arr2.join('')+"不存在"  )