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52 lines
1.2 KiB
52 lines
1.2 KiB
/*
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* Copyright (c) 2018-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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package codetoanalyze.java.performance;
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import java.util.Arrays;
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public class Array {
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public void array_access_good() {
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float[] radii = new float[8];
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for (int i = 0; i < 4; ++i) {
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radii[i * 2] = radii[i];
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radii[i * 2 + 1] = radii[i] + 1;
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}
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}
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public void array_access_overrun_bad() {
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float[] radii = new float[8];
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for (int i = 0; i < 4; ++i) {
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radii[i * 2] = radii[i];
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radii[i * 2 + 2] = radii[i] + 1;
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}
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}
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void array_access_weird_ok(long[] optionNumerators, int length) {
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for (int j = 0; j < length; ++j) {
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if (10 < optionNumerators[j] + 1) {}
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}
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}
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int binary_search_log(String[] arr) {
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return Arrays.binarySearch(arr, "x");
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}
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void fill_linear(String[] arr) {
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Arrays.fill(arr, "x");
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}
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void copyOf_linear(String[] arr) {
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String[] new_arr = Arrays.copyOf(arr, arr.length);
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for (String el : new_arr) {}
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}
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void copyOf_constant(String[] arr) {
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String[] new_arr = Arrays.copyOf(arr, 10);
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}
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}
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