codewars练习（javascript）-2021/3/8

codewars-js练习

2021/3/8

github 地址

my github地址，上面有做的习题记录，不断更新…

【1】<8kyu>【Find Maximum and Minimum Values of a List】

example：

max([4,6,2,1,9,63,-134,566]) returns 566
min([-52, 56, 30, 29, -54, 0, -110]) returns -110
max([5]) returns 5
min([42, 54, 65, 87, 0]) returns 0

solution

<script type="text/javascript">
        var min = function(list){
            list.sort((a,b)=>{return a-b;})
            return list[0];
        }
        var max = function(list){
            list.sort((a,b)=>{return b-a;})
            return list[0];
        }            
        // 验证
        console.log(max([4,6,2,1,9,63,-134,566]));//566
        console.log(min([-52, 56, 30, 29, -54, 0, -110]));// -110
        console.log(max([5]));//5
        console.log(min([42, 54, 65, 87, 0]));// 0
    </script>

【2】<6kyu>【Lottery Ticket】

To do this, you must first count the ‘mini-wins’ on your ticket. Each subarray has both a string and a number within it. If the character code of any of the characters in the string matches the number, you get a mini win. Note you can only have one mini win per sub array.

Once you have counted all of your mini wins, compare that number to the other input provided (win). If your total is more than or equal to (win), return ‘Winner!’. Else return ‘Loser!’.

example：

[ [ 'ABC', 65 ], [ 'HGR', 74 ], [ 'BYHT', 74 ] ]

solution

<script type="text/javascript">
        function bingo(ticket, win){
            // console.log(ticket,win);
            var num = 0;
            for(var i=0;i<ticket.length;i++){
                if(ticket[i][0].indexOf(String.fromCharCode(ticket[i][1])) != -1)num ++;
            }
            // console.log(num)
            if(num >= win)return 'Winner!';
            return 'Loser!'
        }
            
        // 验证
        console.log(bingo([['ABC', 65], ['HGR', 74], ['BYHT', 74]], 2));// 'Loser!'
        console.log(bingo([['ABC', 65], ['HGR', 74], ['BYHT', 74]], 1));//'Winner!'
        console.log(bingo([['HGTYRE', 74], ['BE', 66], ['JKTY', 74]], 3));//'Loser!'
    </script>