史上最全Java面试题整理（附参考答案）

<span class="hljs-keyword">public <span class="hljs-class"><span class="hljs-keyword">class <span class="hljs-title">MyUtil {

<span class="hljs-keyword">public <span class="hljs-keyword">static <T extends Comparable> <span class="hljs-function"><span class="hljs-keyword">int <span class="hljs-title">binarySearch<span class="hljs-params">(T[] x,T key) {
<span class="hljs-keyword">return binarySearch(x,x.length- <span class="hljs-number">1,key);
}

<span class="hljs-comment">// 使用循环实现的二分查找
<span class="hljs-keyword">public <span class="hljs-keyword">static <span class="hljs-function"><span class="hljs-keyword">int <span class="hljs-title">binarySearch<span class="hljs-params">(T[] x,Comparator comp) {
<span class="hljs-keyword">int low = <span class="hljs-number">0;
<span class="hljs-keyword">int high = x.length - <span class="hljs-number">1;
<span class="hljs-keyword">while (low <= high) {
<span class="hljs-keyword">int mid = (low + high) >>> <span class="hljs-number">1;
<span class="hljs-keyword">int cmp = comp.compare(x[mid],key);
<span class="hljs-keyword">if (cmp < <span class="hljs-number">0) {
low= mid + <span class="hljs-number">1;
}
<span class="hljs-keyword">else <span class="hljs-keyword">if (cmp > <span class="hljs-number">0) {
high= mid - <span class="hljs-number">1;
}
<span class="hljs-keyword">else {
<span class="hljs-keyword">return mid;
}
}
<span class="hljs-keyword">return -<span class="hljs-number">1;
}

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