[アルゴリズム]2 Dナビゲーション-ハサミ石布

はさみ石布

説明する

function solution(a, b) {
        let answer = "";
        let scissor = 1,
          rock = 2,
          paper = 3;
        for (i = 0; i < a.length; i++) {
          if (
            (a[i] === scissor && b[i] === paper) ||
            (a[i] === rock && b[i] === scissor) ||
            (a[i] === paper && b[i] === rock)
          ) {
            answer += "A";
          } else if (a[i] === b[i]) {
            answer += "D";
          } else answer += "B";
        }
        return answer;
}

講師の説明

function solution(a, b){         
                let answer="";
                for(let i=0; i<a.length; i++){
                    if(a[i]===b[i]) answer+="D ";
                    else if(a[i]===1 && b[i]===3) answer+="A ";
                    else if(a[i]===2 && b[i]===1) answer+="A ";
                    else if(a[i]===3 && b[i]===2) answer+="A ";
                    else answer+="B ";
                }
                
                return answer;
            }