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leetcode/string/JudgeRouteCircle.java
30 строк
1010 B
Kevin Naughton Jr
adding JudgeRouteCircle.java
02 июн 2018, 00:32
02 июн 2018, 00:32
f9c25d6
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//Initially, there is a Robot at position (0, 0). Given a sequence of its moves, judge if this robot makes a circle, which means it moves back to the original place. // //The move sequence is represented by a string. And each move is represent by a character. The valid robot moves are R (Right), L (Left), U (Up) and D (down). The output should be true or false representing whether the robot makes a circle. // //Example 1: //Input: "UD" //Output: true //Example 2: //Input: "LL" //Output: false class JudgeRouteCircle { public boolean judgeCircle(String moves) { int UD = 0; int LR = 0; for(int i = 0; i < moves.length(); i++) { if(moves.charAt(i) == 'U') { UD++; } else if(moves.charAt(i) == 'D') { UD--; } else if(moves.charAt(i) == 'L') { LR++; } else if(moves.charAt(i) == 'R') { LR--; } } return UD == 0 && LR == 0; } }