Monotonic Array
看一个队列是不是单调队列, 就是递增or递减.
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class Solution { public boolean isMonotonic(int[] A) { if(A == null) return true; if(A.length == 1) return true; boolean res = true; for(int i = 1; i < A.length; i++) { if(A[i] < A[i-1]) res = false; } if(res) return res; res = true; // set to true again. for(int i = 1; i < A.length; i++) { if(A[i] > A[i-1]) res = false; } return res; } } |