【LeetCode-240】Search a 2D Matrix II
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思想全在代码里注释了,来吧,come on
/** * 从右上角进行搜索,如果target > matrix[i][j],则证明不在这一行,则i ++ * 如果target < matrix[i][j],则证明不在这一列,则j -- * 如果target = matrix[i][j],则返回 * @author mh * */public class Searcha2DMatrixII {public boolean searchMatrix(int[][] matrix, int target) {if(target < matrix[0][0] || target > matrix[matrix.length - 1][matrix[0].length - 1]){return false;}int i = 0,j = matrix[0].length - 1;while(i < matrix.length && j >= 0){if(matrix[i][j] > target){ j --;}else if(matrix[i][j] < target){i ++;}else{return true;}}//碰到边界,则返回falsereturn false; }}
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